diff --git a/STYLE_GUIDE.md b/STYLE_GUIDE.md
index 01efebbb..af3df8cf 100644
--- a/STYLE_GUIDE.md
+++ b/STYLE_GUIDE.md
@@ -312,10 +312,10 @@ We follow a slightly modified version of the _Microsoft Writing Style Guide_ gui
 | **Close** | - Apps and programs <br> - Dialog boxes <br> - Files and folders <br> - Notifications and alerts <br> - Tabs <br> - The action a program or app takes when it encounters a problem and can't continue. (Don't confuse with _stop responding_). | - Close the Alarms app. <br> - Close Excel. <br> - Save and close the document. <br> - Closing Excel also closes all open worksheets. |
 | **Leave** | Websites and webpages | Select **Submit** to complete the survey and leave this page. |
 | **Go to** | - Opening a menu. <br> - Going to a tab or another particular place in the UI. <br> - Going to a website or webpage. <br> - It's ok to use _On the **XXX** tab_ if the instruction is brief and continues immediately. | - Go to Search, enter the word **settings**, and then select **Settings**. <br> - Go to **File**, and then select **Close**. <br> - On the ribbon, go to the **Design** tab. <br> - Go to the **Deploy** tab. in the **Configuration** list ... <br> - On the **Deploy** tab, in the **Configuration** list ... <br> - Go to Example.com to register. |
-| **Select** | Instructing the user to select a specific item, including: <br> - Selecting an option, such as a button. <br> - Selecting a check box. <br> - Selecting a value from a list box. <br> - Selecting link text to go to a link. <br> - Selecting an item on a menu or shortcut menu. <br> - Selecting an item from a gallery. | - Select the **Modify** button. <br> - For **Alignment**, select **Left**. <br> - Select the text, open the shortcut menu, and then select **Font**. <br> - Select **Open in new tab**. <br> - Select the **LinkName** link. |
+| **Select** | Instructing the user to select a specific item, including: <br> - Selecting an option, such as a button. <br> - Selecting a checkbox. <br> - Selecting a value from a list box. <br> - Selecting link text to go to a link. <br> - Selecting an item on a menu or shortcut menu. <br> - Selecting an item from a gallery. | - Select the **Modify** button. <br> - For **Alignment**, select **Left**. <br> - Select the text, open the shortcut menu, and then select **Font**. <br> - Select **Open in new tab**. <br> - Select the **LinkName** link. |
 | **Select and hold, select and hold (or right-click)** | Use to describe pressing and holding an element in the UI. It's OK to use _right-click_ with _select and hold_ when the instruction isn't specific to touch devices. | - To flag a message that you want to deal with later, select and hold it, and then select **Set flag**. <br> - Select and hold (or right-click) the Windows taskbar, and then select **Cascade windows**. <br> - Select and hold (or right-click) the **Start** button, and then select **Device Manager**. |
 | **>** | Use a greater-than symbol (>) to separate sequential steps. <br> Only use this approach when there's a clear and obvious path through the UI and the selection method is the same for each step. For example, don't mix things that require opening, selecting, and choosing. <br> Don't bold the greater-than symbol. Include a space before and after the symbol. | Select **Accounts** > **Other accounts** > **Add an account**. |
-| **Clear** | Clearing the selection from a check box. | Clear the **Header row** checkbox. | 
+| **Clear** | Clearing the selection from a checkbox. | Clear the **Header row** checkbox. | 
 | **Choose** | Choosing an option, based on the customer's preference or desired outcome. | On the **Font** tab, choose the effects you want. |
 | **Switch, turn on, turn off** | Turning a toggle key or toggle switch on or off. | - Use the **Caps lock** key to switch from typing capital letter to typing lowercase letters. <br> - To keep all applied filters, turn on the **Pass all filters** toggle. |
 | **Enter** | Instructing the customer to type or otherwise insert a value, or to type or select a value in a combo box. | - In the search box, enter... <br> - In the **Tab stop position** box, enter the location where you want to set the new tab. <br> - In the **Deployment script name** box, enter a name for this script. |
@@ -415,7 +415,7 @@ Follow these basic guidelines when writing UI text.
 * Keep it short. Users don’t want to read dense text. Remember that UI text can expand by 30% when it’s translated into other languages.
 * Keep it simple. Try to use simple sentences (one subject, one verb, one main clause and idea) rather than compound or complex sentences.
 * Prefer active voice over passive voice. For example, "You can attach up to 10 policies" is active voice, and "Up to 10 policies can be attached" is passive voice.
-* Use device-agnostic language rather than mouse-specific language. For example, use _choose_ instead of _click_ (exception: use _select_ for check boxes).
+* Use device-agnostic language rather than mouse-specific language. For example, use _choose_ instead of _click_ (exception: use _select_ for checkboxes).
 
 ##### Tone
 
diff --git a/TERMS.md b/TERMS.md
index 463ea739..7855d8cd 100644
--- a/TERMS.md
+++ b/TERMS.md
@@ -154,6 +154,8 @@ certificate authority
 
 Use _certificates_ on first mention. It’s OK to use _certs_ thereafter.
 
+**checkbox, checkboxes**
+
 **CI/CD**
 
 Use _continuous integration_ and _continuous delivery (CI/CD)_ or _continuous integration and delivery (CI/CD)_ on first mention.