diff --git a/wp-admin/includes/class-wp-media-list-table.php b/wp-admin/includes/class-wp-media-list-table.php
index cc27e80324..d425bccfbf 100644
--- a/wp-admin/includes/class-wp-media-list-table.php
+++ b/wp-admin/includes/class-wp-media-list-table.php
@@ -151,7 +151,7 @@ class WP_Media_List_Table extends WP_List_Table {
 			);
 		}
 
-		$type_links['detached'] = '<option value="detached"' . ( $this->detached ? ' selected="selected"' : '' ) . '>' . __( 'Unattached' ) . '</option>';
+		$type_links['detached'] = '<option value="detached"' . ( $this->detached ? ' selected="selected"' : '' ) . '>' . _x( 'Unattached', 'media items' ) . '</option>';
 
 		$type_links['mine'] = sprintf(
 			'<option value="mine"%s>%s</option>',
diff --git a/wp-includes/media.php b/wp-includes/media.php
index 43795c9084..6e7f66760f 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -4456,7 +4456,7 @@ function wp_enqueue_media( $args = array() ) {
 		'allDates'                    => __( 'All dates' ),
 		'noItemsFound'                => __( 'No items found.' ),
 		'insertIntoPost'              => $post_type_object->labels->insert_into_item,
-		'unattached'                  => __( 'Unattached' ),
+		'unattached'                  => _x( 'Unattached', 'media items' ),
 		'mine'                        => _x( 'Mine', 'media items' ),
 		'trash'                       => _x( 'Trash', 'noun' ),
 		'uploadedToThisPost'          => $post_type_object->labels->uploaded_to_this_item,
diff --git a/wp-includes/post.php b/wp-includes/post.php
index 2bcd72c6d4..b13942002a 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -2939,7 +2939,7 @@ function get_post_mime_types() {
 			),
 		),
 		'audio'       => array(
-			__( 'Audio' ),
+			_x( 'Audio', 'file type group' ),
 			__( 'Manage Audio' ),
 			/* translators: %s: Number of audio files. */
 			_n_noop(
@@ -2948,7 +2948,7 @@ function get_post_mime_types() {
 			),
 		),
 		'video'       => array(
-			__( 'Video' ),
+			_x( 'Video', 'file type group' ),
 			__( 'Manage Video' ),
 			/* translators: %s: Number of video files. */
 			_n_noop(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 06914cf4a6..64a19dd2c7 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51902';
+$wp_version = '5.9-alpha-51903';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.