diff --git a/wp-admin/includes/ajax-actions.php b/wp-admin/includes/ajax-actions.php
index d94bb928df..75c36e6068 100644
--- a/wp-admin/includes/ajax-actions.php
+++ b/wp-admin/includes/ajax-actions.php
@@ -151,8 +151,8 @@ function wp_ajax_ajax_tag_search() {
 	}
 
 	$results = get_terms(
-		$taxonomy,
 		array(
+			'taxonomy'   => $taxonomy,
 			'name__like' => $s,
 			'fields'     => 'names',
 			'hide_empty' => false,
@@ -1085,11 +1085,11 @@ function wp_ajax_get_tagcloud() {
 	}
 
 	$tags = get_terms(
-		$taxonomy,
 		array(
-			'number'  => 45,
-			'orderby' => 'count',
-			'order'   => 'DESC',
+			'taxonomy' => $taxonomy,
+			'number'   => 45,
+			'orderby'  => 'count',
+			'order'    => 'DESC',
 		)
 	);
 
diff --git a/wp-admin/includes/class-wp-terms-list-table.php b/wp-admin/includes/class-wp-terms-list-table.php
index 99f76fd632..44ad543464 100644
--- a/wp-admin/includes/class-wp-terms-list-table.php
+++ b/wp-admin/includes/class-wp-terms-list-table.php
@@ -214,6 +214,7 @@ class WP_Terms_List_Table extends WP_List_Table {
 		$args = wp_parse_args(
 			$this->callback_args,
 			array(
+				'taxonomy'   => $taxonomy,
 				'page'       => 1,
 				'number'     => 20,
 				'search'     => '',
@@ -237,7 +238,8 @@ class WP_Terms_List_Table extends WP_List_Table {
 			$args['number'] = 0;
 			$args['offset'] = $args['number'];
 		}
-		$terms = get_terms( $taxonomy, $args );
+
+		$terms = get_terms( $args );
 
 		if ( empty( $terms ) || ! is_array( $terms ) ) {
 			echo '<tr class="no-items"><td class="colspanchange" colspan="' . $this->get_column_count() . '">';
diff --git a/wp-admin/includes/export.php b/wp-admin/includes/export.php
index c9959cb852..54e0af0346 100644
--- a/wp-admin/includes/export.php
+++ b/wp-admin/includes/export.php
@@ -159,7 +159,12 @@ function export_wp( $args = array() ) {
 		$tags       = (array) get_tags( array( 'get' => 'all' ) );
 
 		$custom_taxonomies = get_taxonomies( array( '_builtin' => false ) );
-		$custom_terms      = (array) get_terms( $custom_taxonomies, array( 'get' => 'all' ) );
+		$custom_terms      = (array) get_terms(
+			array(
+				'taxonomy' => $custom_taxonomies,
+				'get'      => 'all',
+			)
+		);
 
 		// Put categories in order with no child going before its parent.
 		while ( $cat = array_shift( $categories ) ) {
diff --git a/wp-admin/includes/nav-menu.php b/wp-admin/includes/nav-menu.php
index 212ca7a0d9..81b1d18612 100644
--- a/wp-admin/includes/nav-menu.php
+++ b/wp-admin/includes/nav-menu.php
@@ -663,6 +663,7 @@ function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
 	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;
 
 	$args = array(
+		'taxonomy'     => $taxonomy_name,
 		'child_of'     => 0,
 		'exclude'      => '',
 		'hide_empty'   => false,
@@ -675,7 +676,7 @@ function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
 		'pad_counts'   => false,
 	);
 
-	$terms = get_terms( $taxonomy_name, $args );
+	$terms = get_terms( $args );
 
 	if ( ! $terms || is_wp_error( $terms ) ) {
 		echo '<p>' . __( 'No items.' ) . '</p>';
@@ -774,8 +775,8 @@ function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
 			<ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
 				<?php
 				$popular_terms  = get_terms(
-					$taxonomy_name,
 					array(
+						'taxonomy'     => $taxonomy_name,
 						'orderby'      => 'count',
 						'order'        => 'DESC',
 						'number'       => 10,
@@ -812,8 +813,8 @@ function wp_nav_menu_item_taxonomy_meta_box( $object, $box ) {
 			if ( isset( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] ) ) {
 				$searched       = esc_attr( $_REQUEST[ 'quick-search-taxonomy-' . $taxonomy_name ] );
 				$search_results = get_terms(
-					$taxonomy_name,
 					array(
+						'taxonomy'     => $taxonomy_name,
 						'name__like'   => $searched,
 						'fields'       => 'all',
 						'orderby'      => 'count',
diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 6d884e1681..ec083c569f 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -2041,8 +2041,8 @@ function taxonomy_meta_box_sanitize_cb_input( $taxonomy, $terms ) {
 		}
 
 		$_term = get_terms(
-			$taxonomy,
 			array(
+				'taxonomy'   => $taxonomy,
 				'name'       => $term,
 				'fields'     => 'ids',
 				'hide_empty' => false,
diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index 5c4f4d8a3a..00faff777e 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -125,12 +125,13 @@ function wp_terms_checklist( $post_id = 0, $args = array() ) {
 	} else {
 		$args['selected_cats'] = array();
 	}
+
 	if ( is_array( $parsed_args['popular_cats'] ) ) {
 		$args['popular_cats'] = $parsed_args['popular_cats'];
 	} else {
 		$args['popular_cats'] = get_terms(
-			$taxonomy,
 			array(
+				'taxonomy'     => $taxonomy,
 				'fields'       => 'ids',
 				'orderby'      => 'count',
 				'order'        => 'DESC',
@@ -139,10 +140,11 @@ function wp_terms_checklist( $post_id = 0, $args = array() ) {
 			)
 		);
 	}
+
 	if ( $descendants_and_self ) {
 		$categories = (array) get_terms(
-			$taxonomy,
 			array(
+				'taxonomy'     => $taxonomy,
 				'child_of'     => $descendants_and_self,
 				'hierarchical' => 0,
 				'hide_empty'   => 0,
@@ -151,7 +153,12 @@ function wp_terms_checklist( $post_id = 0, $args = array() ) {
 		$self       = get_term( $descendants_and_self, $taxonomy );
 		array_unshift( $categories, $self );
 	} else {
-		$categories = (array) get_terms( $taxonomy, array( 'get' => 'all' ) );
+		$categories = (array) get_terms(
+			array(
+				'taxonomy' => $taxonomy,
+				'get'      => 'all',
+			)
+		);
 	}
 
 	$output = '';
@@ -207,8 +214,8 @@ function wp_popular_terms_checklist( $taxonomy, $default = 0, $number = 10, $ech
 	}
 
 	$terms = get_terms(
-		$taxonomy,
 		array(
+			'taxonomy'     => $taxonomy,
 			'orderby'      => 'count',
 			'order'        => 'DESC',
 			'number'       => $number,
@@ -266,8 +273,8 @@ function wp_link_category_checklist( $link_id = 0 ) {
 	}
 
 	$categories = get_terms(
-		'link_category',
 		array(
+			'taxonomy'   => 'link_category',
 			'orderby'    => 'name',
 			'hide_empty' => 0,
 		)
diff --git a/wp-includes/bookmark-template.php b/wp-includes/bookmark-template.php
index 8975a004d2..c8d18bb891 100644
--- a/wp-includes/bookmark-template.php
+++ b/wp-includes/bookmark-template.php
@@ -237,8 +237,8 @@ function wp_list_bookmarks( $args = '' ) {
 
 	if ( $parsed_args['categorize'] ) {
 		$cats = get_terms(
-			'link_category',
 			array(
+				'taxonomy'     => 'link_category',
 				'name__like'   => $parsed_args['category_name'],
 				'include'      => $parsed_args['category'],
 				'exclude'      => $parsed_args['exclude_category'],
diff --git a/wp-includes/category-template.php b/wp-includes/category-template.php
index b60a557c85..82b1f7bf6c 100644
--- a/wp-includes/category-template.php
+++ b/wp-includes/category-template.php
@@ -384,7 +384,7 @@ function wp_dropdown_categories( $args = '' ) {
 	// Avoid clashes with the 'name' param of get_terms().
 	$get_terms_args = $parsed_args;
 	unset( $get_terms_args['name'] );
-	$categories = get_terms( $parsed_args['taxonomy'], $get_terms_args );
+	$categories = get_terms( $get_terms_args );
 
 	$name     = esc_attr( $parsed_args['name'] );
 	$class    = esc_attr( $parsed_args['class'] );
@@ -701,7 +701,6 @@ function wp_tag_cloud( $args = '' ) {
 	$args     = wp_parse_args( $args, $defaults );
 
 	$tags = get_terms(
-		$args['taxonomy'],
 		array_merge(
 			$args,
 			array(
diff --git a/wp-includes/category.php b/wp-includes/category.php
index 14133be442..19bcb042fd 100644
--- a/wp-includes/category.php
+++ b/wp-includes/category.php
@@ -27,8 +27,6 @@ function get_categories( $args = '' ) {
 	$defaults = array( 'taxonomy' => 'category' );
 	$args     = wp_parse_args( $args, $defaults );
 
-	$taxonomy = $args['taxonomy'];
-
 	/**
 	 * Filters the taxonomy used to retrieve terms when calling get_categories().
 	 *
@@ -37,7 +35,7 @@ function get_categories( $args = '' ) {
 	 * @param string $taxonomy Taxonomy to retrieve terms from.
 	 * @param array  $args     An array of arguments. See get_terms().
 	 */
-	$taxonomy = apply_filters( 'get_categories_taxonomy', $taxonomy, $args );
+	$args['taxonomy'] = apply_filters( 'get_categories_taxonomy', $args['taxonomy'], $args );
 
 	// Back compat
 	if ( isset( $args['type'] ) && 'link' == $args['type'] ) {
@@ -51,11 +49,10 @@ function get_categories( $args = '' ) {
 				'<code>taxonomy => link_category</code>'
 			)
 		);
-		$taxonomy         = 'link_category';
-		$args['taxonomy'] = $taxonomy;
+		$args['taxonomy'] = 'link_category';
 	}
 
-	$categories = get_terms( $taxonomy, $args );
+	$categories = get_terms( $args );
 
 	if ( is_wp_error( $categories ) ) {
 		$categories = array();
@@ -136,10 +133,10 @@ function get_category_by_path( $category_path, $full_match = true, $output = OBJ
 		$full_path .= ( $pathdir != '' ? '/' : '' ) . sanitize_title( $pathdir );
 	}
 	$categories = get_terms(
-		'category',
 		array(
-			'get'  => 'all',
-			'slug' => $leaf_path,
+			'taxonomy' => 'category',
+			'get'      => 'all',
+			'slug'     => $leaf_path,
 		)
 	);
 
@@ -279,7 +276,10 @@ function sanitize_category_field( $field, $value, $cat_id, $context ) {
  * @return WP_Term[]|int $tags Array of 'post_tag' term objects, or a count thereof.
  */
 function get_tags( $args = '' ) {
-	$tags = get_terms( 'post_tag', $args );
+	$defaults = array( 'taxonomy' => 'post_tag' );
+	$args     = wp_parse_args( $args, $defaults );
+
+	$tags = get_terms( $args );
 
 	if ( empty( $tags ) ) {
 		$return = array();
diff --git a/wp-includes/class-walker-category.php b/wp-includes/class-walker-category.php
index c881e68045..d587dd687f 100644
--- a/wp-includes/class-walker-category.php
+++ b/wp-includes/class-walker-category.php
@@ -200,8 +200,8 @@ class Walker_Category extends Walker {
 			if ( ! empty( $args['current_category'] ) ) {
 				// 'current_category' can be an array, so we use `get_terms()`.
 				$_current_terms = get_terms(
-					$category->taxonomy,
 					array(
+						'taxonomy'   => $category->taxonomy,
 						'include'    => $args['current_category'],
 						'hide_empty' => false,
 					)
diff --git a/wp-includes/class-wp-customize-nav-menus.php b/wp-includes/class-wp-customize-nav-menus.php
index 9ff9fb3d66..44c19fd162 100644
--- a/wp-includes/class-wp-customize-nav-menus.php
+++ b/wp-includes/class-wp-customize-nav-menus.php
@@ -210,8 +210,8 @@ final class WP_Customize_Nav_Menus {
 			}
 		} elseif ( 'taxonomy' === $type ) {
 			$terms = get_terms(
-				$object,
 				array(
+					'taxonomy'     => $object,
 					'child_of'     => 0,
 					'exclude'      => '',
 					'hide_empty'   => false,
@@ -365,8 +365,8 @@ final class WP_Customize_Nav_Menus {
 		// Query taxonomy terms.
 		$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'names' );
 		$terms      = get_terms(
-			$taxonomies,
 			array(
+				'taxonomies' => $taxonomies,
 				'name__like' => $args['s'],
 				'number'     => 20,
 				'offset'     => 20 * ( $args['pagenum'] - 1 ),
diff --git a/wp-includes/class-wp-term-query.php b/wp-includes/class-wp-term-query.php
index 4483c2f1ea..13c0ea3f80 100644
--- a/wp-includes/class-wp-term-query.php
+++ b/wp-includes/class-wp-term-query.php
@@ -428,8 +428,8 @@ class WP_Term_Query {
 				$excluded_children = array_merge(
 					$excluded_children,
 					(array) get_terms(
-						reset( $taxonomies ),
 						array(
+							'taxonomy'   => reset( $taxonomies ),
 							'child_of'   => intval( $extrunk ),
 							'fields'     => 'ids',
 							'hide_empty' => 0,
diff --git a/wp-includes/class-wp-xmlrpc-server.php b/wp-includes/class-wp-xmlrpc-server.php
index 72aeef2048..a8fad5fdbf 100644
--- a/wp-includes/class-wp-xmlrpc-server.php
+++ b/wp-includes/class-wp-xmlrpc-server.php
@@ -1557,8 +1557,8 @@ class wp_xmlrpc_server extends IXR_Server {
 					$ambiguous_terms = array();
 					if ( is_taxonomy_hierarchical( $taxonomy ) ) {
 						$tax_term_names = get_terms(
-							$taxonomy,
 							array(
+								'taxonomy'   => $taxonomy,
 								'fields'     => 'names',
 								'hide_empty' => false,
 							)
@@ -2390,7 +2390,7 @@ class wp_xmlrpc_server extends IXR_Server {
 			return new IXR_Error( 401, __( 'Sorry, you are not allowed to assign terms in this taxonomy.' ) );
 		}
 
-		$query = array();
+		$query = array( 'taxonomy' => $taxonomy->name );
 
 		if ( isset( $filter['number'] ) ) {
 			$query['number'] = absint( $filter['number'] );
@@ -2418,7 +2418,7 @@ class wp_xmlrpc_server extends IXR_Server {
 			$query['search'] = $filter['search'];
 		}
 
-		$terms = get_terms( $taxonomy->name, $query );
+		$terms = get_terms( $query );
 
 		if ( is_wp_error( $terms ) ) {
 			return new IXR_Error( 500, $terms->get_error_message() );
diff --git a/wp-includes/deprecated.php b/wp-includes/deprecated.php
index 43295d90af..dcf63bdcfc 100644
--- a/wp-includes/deprecated.php
+++ b/wp-includes/deprecated.php
@@ -1287,7 +1287,13 @@ function get_all_category_ids() {
 	_deprecated_function( __FUNCTION__, '4.0.0', 'get_terms()' );
 
 	if ( ! $cat_ids = wp_cache_get( 'all_category_ids', 'category' ) ) {
-		$cat_ids = get_terms( 'category', array('fields' => 'ids', 'get' => 'all') );
+		$cat_ids = get_terms(
+			array(
+				'taxonomy' => 'category',
+				'fields'   => 'ids',
+				'get'      => 'all',
+			)
+		);
 		wp_cache_add( 'all_category_ids', $cat_ids, 'category' );
 	}
 
diff --git a/wp-includes/nav-menu.php b/wp-includes/nav-menu.php
index 68a9e09c3c..98584eac8a 100644
--- a/wp-includes/nav-menu.php
+++ b/wp-includes/nav-menu.php
@@ -597,6 +597,7 @@ function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item
  */
 function wp_get_nav_menus( $args = array() ) {
 	$defaults = array(
+		'taxonomy'   => 'nav_menu',
 		'hide_empty' => false,
 		'orderby'    => 'name',
 	);
@@ -612,7 +613,7 @@ function wp_get_nav_menus( $args = array() ) {
 	 * @param array $menus An array of menu objects.
 	 * @param array $args  An array of arguments used to retrieve menu objects.
 	 */
-	return apply_filters( 'wp_get_nav_menus', get_terms( 'nav_menu', $args ), $args );
+	return apply_filters( 'wp_get_nav_menus', get_terms( $args ), $args );
 }
 
 /**
@@ -727,8 +728,8 @@ function wp_get_nav_menu_items( $menu, $args = array() ) {
 		if ( ! empty( $terms ) ) {
 			foreach ( array_keys( $terms ) as $taxonomy ) {
 				get_terms(
-					$taxonomy,
 					array(
+						'taxonomy'     => $taxonomy,
 						'include'      => $terms[ $taxonomy ],
 						'hierarchical' => false,
 					)
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php
index ab9f63753d..881afcd41f 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php
@@ -184,7 +184,7 @@ class WP_REST_Terms_Controller extends WP_REST_Controller {
 			'slug'       => 'slug',
 		);
 
-		$prepared_args = array();
+		$prepared_args = array( 'taxonomy' => $this->taxonomy );
 
 		/*
 		 * For each known parameter which is both registered and present in the request,
@@ -249,7 +249,7 @@ class WP_REST_Terms_Controller extends WP_REST_Controller {
 			// Used when calling wp_count_terms() below.
 			$prepared_args['object_ids'] = $prepared_args['post'];
 		} else {
-			$query_result = get_terms( $this->taxonomy, $prepared_args );
+			$query_result = get_terms( $prepared_args );
 		}
 
 		$count_args = $prepared_args;
diff --git a/wp-includes/taxonomy.php b/wp-includes/taxonomy.php
index e6c4332fbb..5895588e38 100644
--- a/wp-includes/taxonomy.php
+++ b/wp-includes/taxonomy.php
@@ -1131,7 +1131,7 @@ function get_term_to_edit( $id, $taxonomy ) {
  * @param array        $deprecated Argument array, when using the legacy function parameter format. If present, this
  *                                 parameter will be interpreted as `$args`, and the first function parameter will
  *                                 be parsed as a taxonomy or array of taxonomies.
- * @return array|int|WP_Error List of WP_Term instances and their children. Will return WP_Error, if any of $taxonomies
+ * @return array|int|WP_Error List of WP_Term instances and their children. Will return WP_Error, if any of taxonomies
  *                            do not exist.
  */
 function get_terms( $args = array(), $deprecated = '' ) {
@@ -1685,7 +1685,10 @@ function sanitize_term_field( $field, $value, $term_id, $taxonomy, $context ) {
  * @return array|int|WP_Error Number of terms in that taxonomy or WP_Error if the taxonomy does not exist.
  */
 function wp_count_terms( $taxonomy, $args = array() ) {
-	$defaults = array( 'hide_empty' => false );
+	$defaults = array(
+		'taxonomy'   => $taxonomy,
+		'hide_empty' => false,
+	);
 	$args     = wp_parse_args( $args, $defaults );
 
 	// backward compatibility
@@ -1696,7 +1699,7 @@ function wp_count_terms( $taxonomy, $args = array() ) {
 
 	$args['fields'] = 'count';
 
-	return get_terms( $taxonomy, $args );
+	return get_terms( $args );
 }
 
 /**
@@ -2191,8 +2194,8 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) {
 	 * unless a unique slug has been explicitly provided.
 	 */
 	$name_matches = get_terms(
-		$taxonomy,
 		array(
+			'taxonomy'               => $taxonomy,
 			'name'                   => $name,
 			'hide_empty'             => false,
 			'parent'                 => $args['parent'],
@@ -2219,8 +2222,8 @@ function wp_insert_term( $term, $taxonomy, $args = array() ) {
 		if ( ! $slug_provided || $name_match->slug === $slug || $slug_match ) {
 			if ( is_taxonomy_hierarchical( $taxonomy ) ) {
 				$siblings = get_terms(
-					$taxonomy,
 					array(
+						'taxonomy'               => $taxonomy,
 						'get'                    => 'all',
 						'parent'                 => $parent,
 						'update_term_meta_cache' => false,
@@ -3470,8 +3473,8 @@ function _get_term_hierarchy( $taxonomy ) {
 	}
 	$children = array();
 	$terms    = get_terms(
-		$taxonomy,
 		array(
+			'taxonomy'               => $taxonomy,
 			'get'                    => 'all',
 			'orderby'                => 'id',
 			'fields'                 => 'id=>parent',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7bba65b2dc..2bf3164ae7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45722';
+$wp_version = '5.3-alpha-45723';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-includes/widgets/class-wp-widget-links.php b/wp-includes/widgets/class-wp-widget-links.php
index 2f764424c2..233c64bcd8 100644
--- a/wp-includes/widgets/class-wp-widget-links.php
+++ b/wp-includes/widgets/class-wp-widget-links.php
@@ -137,7 +137,7 @@ class WP_Widget_Links extends WP_Widget {
 				'limit'       => -1,
 			)
 		);
-		$link_cats = get_terms( 'link_category' );
+		$link_cats = get_terms( array( 'taxonomy' => 'link_category' ) );
 		$limit     = intval( $instance['limit'] );
 		if ( ! $limit ) {
 			$limit = -1;