Index: src/wp-admin/nav-menus.php
===================================================================
--- src/wp-admin/nav-menus.php	(revision 53329)
+++ src/wp-admin/nav-menus.php	(working copy)
@@ -624,7 +624,7 @@
 	);
 
 	$menu_management  = '<p>' . __( 'The menu management box at the top of the screen is used to control which menu is opened in the editor below.' ) . '</p>';
-	$menu_management .= '<ul><li>' . __( 'To edit an existing menu, <strong>choose a menu from the drop down and click Select</strong>' ) . '</li>';
+	$menu_management .= '<ul><li>' . __( 'To edit an existing menu, <strong>choose a menu from the dropdown and click Select</strong>' ) . '</li>';
 	$menu_management .= '<li>' . __( 'If you have not yet created any menus, <strong>click the &#8217;create a new menu&#8217; link</strong> to get started' ) . '</li></ul>';
 	$menu_management .= '<p>' . __( 'You can assign theme locations to individual menus by <strong>selecting the desired settings</strong> at the bottom of the menu editor. To assign menus to all theme locations at once, <strong>visit the Manage Locations tab</strong> at the top of the screen.' ) . '</p>';
 
@@ -652,7 +652,7 @@
 	);
 else : // Locations tab.
 	$locations_overview  = '<p>' . __( 'This screen is used for globally assigning menus to locations defined by your theme.' ) . '</p>';
-	$locations_overview .= '<ul><li>' . __( 'To assign menus to one or more theme locations, <strong>select a menu from each location&#8217;s drop down.</strong> When you are finished, <strong>click Save Changes</strong>' ) . '</li>';
+	$locations_overview .= '<ul><li>' . __( 'To assign menus to one or more theme locations, <strong>select a menu from each location&#8217;s dropdown.</strong> When you are finished, <strong>click Save Changes</strong>' ) . '</li>';
 	$locations_overview .= '<li>' . __( 'To edit a menu currently assigned to a theme location, <strong>click the adjacent &#8217;Edit&#8217; link</strong>' ) . '</li>';
 	$locations_overview .= '<li>' . __( 'To add a new menu instead of assigning an existing one, <strong>click the &#8217;Use new menu&#8217; link</strong>. Your new menu will be automatically assigned to that theme location' ) . '</li></ul>';
 
Index: src/wp-includes/post-template.php
===================================================================
--- src/wp-includes/post-template.php	(revision 53329)
+++ src/wp-includes/post-template.php	(working copy)
@@ -1204,12 +1204,12 @@
 	}
 
 	/**
-	 * Filters the HTML output of a list of pages as a drop down.
+	 * Filters the HTML output of a list of pages as a dropdown.
 	 *
 	 * @since 2.1.0
 	 * @since 4.4.0 `$parsed_args` and `$pages` added as arguments.
 	 *
-	 * @param string    $output      HTML output for drop down list of pages.
+	 * @param string    $output      HTML output for dropdown list of pages.
 	 * @param array     $parsed_args The parsed arguments array. See wp_dropdown_pages()
 	 *                               for information on accepted arguments.
 	 * @param WP_Post[] $pages       Array of the page objects.