Index: wp-includes/nav-menu-template.php
===================================================================
--- wp-includes/nav-menu-template.php	(revision 38655)
+++ wp-includes/nav-menu-template.php	(working copy)
@@ -21,7 +21,7 @@
  * @param array $args {
  *     Optional. Array of nav menu arguments.
  *
- *     @type int|string|WP_Term $menu            Desired menu. Accepts (matching in order) id, slug, name, menu object. Default empty.
+ *     @type int|string|WP_Term $menu            Desired menu. Accepts menu ID, slug, name, or object. Default empty.
  *     @type string             $menu_class      CSS class to use for the ul element which forms the menu. Default 'menu'.
  *     @type string             $menu_id         The ID that is applied to the ul element which forms the menu.
  *                                               Default is the menu slug, incremented.
Index: wp-includes/nav-menu.php
===================================================================
--- wp-includes/nav-menu.php	(revision 38655)
+++ wp-includes/nav-menu.php	(working copy)
@@ -12,7 +12,7 @@
  *
  * @since 3.0.0
  *
- * @param int|string|WP_Term $menu Menu ID, slug, or name - or the menu object.
+ * @param int|string|WP_Term $menu Menu ID, slug, name, or object.
  * @return WP_Term|false False if $menu param isn't supplied or term does not exist, menu object if successful.
  */
 function wp_get_nav_menu_object( $menu ) {
@@ -43,8 +43,8 @@
 	 *
 	 * @since 4.3.0
 	 *
-	 * @param object|false $menu_obj Term from nav_menu taxonomy, or false if nothing had been found.
-	 * @param string       $menu     The menu ID, slug, or name passed to wp_get_nav_menu_object().
+	 * @param WP_Term|false      $menu_obj Term from nav_menu taxonomy, or false if nothing had been found.
+	 * @param int|string|WP_Term $menu     The menu ID, slug, name, or object passed to wp_get_nav_menu_object().
 	 */
 	return apply_filters( 'wp_get_nav_menu_object', $menu_obj, $menu );
 }
@@ -56,7 +56,7 @@
  *
  * @since 3.0.0
  *
- * @param int|string $menu The menu to check (ID, slug, or name).
+ * @param int|string|WP_Term $menu ID, slug, name, or object of menu to check.
  * @return bool Whether the menu exists.
  */
 function is_nav_menu( $menu ) {
@@ -215,7 +215,7 @@
  *
  * @since 3.0.0
  *
- * @param string $menu Menu ID, slug, or name.
+ * @param int|string|WP_Term $menu Menu ID, slug, name, or object.
  * @return bool|WP_Error True on success, false or WP_Error object on failure.
  */
 function wp_delete_nav_menu( $menu ) {
@@ -612,8 +612,8 @@
  * @global string $_menu_item_sort_prop
  * @staticvar array $fetched
  *
- * @param string $menu Menu name, ID, or slug.
- * @param array  $args Optional. Arguments to pass to get_posts().
+ * @param int|string|WP_Term $menu Menu ID, slug, name, or object.
+ * @param array              $args Optional. Arguments to pass to get_posts().
  * @return false|array $items Array of menu items, otherwise false.
  */
 function wp_get_nav_menu_items( $menu, $args = array() ) {
@@ -772,7 +772,7 @@
 
 				$menu_item->type_label = __( 'Post Type Archive' );
 				$post_content = wp_trim_words( $menu_item->post_content, 200 );
-				$post_type_description = '' == $post_content ? $post_type_description : $post_content; 
+				$post_type_description = '' == $post_content ? $post_type_description : $post_content;
 				$menu_item->url = get_post_type_archive_link( $menu_item->object );
 			} elseif ( 'taxonomy' == $menu_item->type ) {
 				$object = get_taxonomy( $menu_item->object );