diff --git a/wp-includes/class-wp-oembed-controller.php b/wp-includes/class-wp-oembed-controller.php
index 912e2d131b..3e93a8e87a 100644
--- a/wp-includes/class-wp-oembed-controller.php
+++ b/wp-includes/class-wp-oembed-controller.php
@@ -10,7 +10,7 @@
 /**
  * oEmbed API endpoint controller.
  *
- * Registers the API route and delivers the response data.
+ * Registers the REST API route and delivers the response data.
  * The output format (XML or JSON) is handled by the REST API.
  *
  * @since 4.4.0
diff --git a/wp-includes/rest-api.php b/wp-includes/rest-api.php
index 870bc6443c..0cac341222 100644
--- a/wp-includes/rest-api.php
+++ b/wp-includes/rest-api.php
@@ -130,7 +130,7 @@ function register_rest_route( $namespace, $route, $args = array(), $override = f
  *     @type callable|null $update_callback Optional. The callback function used to set and update the field value. Default
  *                                          is 'null', the value cannot be set or updated. The function will be passed
  *                                          the model object, like WP_Post.
- *     @type array|null $schema             Optional. The callback function used to create the schema for this field.
+ *     @type array|null $schema             Optional. The schema for this field.
  *                                          Default is 'null', no schema entry will be returned.
  * }
  */
@@ -153,7 +153,7 @@ function register_rest_field( $object_type, $attribute, $args = array() ) {
 }
 
 /**
- * Registers rewrite rules for the API.
+ * Registers rewrite rules for the REST API.
  *
  * @since 4.4.0
  *
@@ -498,7 +498,7 @@ function rest_get_server() {
 		/**
 		 * Filters the REST Server Class.
 		 *
-		 * This filter allows you to adjust the server class used by the API, using a
+		 * This filter allows you to adjust the server class used by the REST API, using a
 		 * different class to handle requests.
 		 *
 		 * @since 4.4.0
@@ -509,7 +509,7 @@ function rest_get_server() {
 		$wp_rest_server       = new $wp_rest_server_class;
 
 		/**
-		 * Fires when preparing to serve an API request.
+		 * Fires when preparing to serve a REST API request.
 		 *
 		 * Endpoint objects should be created and register their hooks on this action rather
 		 * than another action to ensure they're only loaded when needed.
@@ -802,7 +802,7 @@ function _rest_array_intersect_key_recursive( $array1, $array2 ) {
 }
 
 /**
- * Filters the API response to include only a white-listed set of response object fields.
+ * Filters the REST API response to include only a white-listed set of response object fields.
  *
  * @since 4.8.0
  *
diff --git a/wp-includes/rest-api/class-wp-rest-response.php b/wp-includes/rest-api/class-wp-rest-response.php
index 1a077f17ea..846b55f32c 100644
--- a/wp-includes/rest-api/class-wp-rest-response.php
+++ b/wp-includes/rest-api/class-wp-rest-response.php
@@ -262,7 +262,7 @@ class WP_REST_Response extends WP_HTTP_Response {
 		);
 
 		/**
-		 * Filters extra CURIEs available on API responses.
+		 * Filters extra CURIEs available on REST API responses.
 		 *
 		 * CURIEs allow a shortened version of URI relations. This allows a more
 		 * usable form for custom relations than using the full URI. These work
@@ -284,7 +284,7 @@ class WP_REST_Response extends WP_HTTP_Response {
 		 *
 		 * @since 4.5.0
 		 *
-		 * @param array $additional Additional CURIEs to register with the API.
+		 * @param array $additional Additional CURIEs to register with the REST API.
 		 */
 		$additional = apply_filters( 'rest_response_link_curies', array() );
 
diff --git a/wp-includes/rest-api/class-wp-rest-server.php b/wp-includes/rest-api/class-wp-rest-server.php
index 3eeefda167..e0e8a3528e 100644
--- a/wp-includes/rest-api/class-wp-rest-server.php
+++ b/wp-includes/rest-api/class-wp-rest-server.php
@@ -259,7 +259,7 @@ class WP_REST_Server {
 	}
 
 	/**
-	 * Handles serving an API request.
+	 * Handles serving a REST API request.
 	 *
 	 * Matches the current server URI to a route and runs the first matching
 	 * callback then outputs a JSON representation of the returned value.
@@ -286,7 +286,7 @@ class WP_REST_Server {
 			 *
 			 * This is done because for authentications such as Application
 			 * Passwords, we don't want it to be accepted unless the current HTTP
-			 * request is an API request, which can't always be identified early
+			 * request is a REST API request, which can't always be identified early
 			 * enough in evaluation.
 			 */
 			$current_user = null;
@@ -367,7 +367,7 @@ class WP_REST_Server {
 		 *
 		 * @since 4.4.0
 		 * @deprecated 4.7.0 Use the {@see 'rest_authentication_errors'} filter to
-		 *                   restrict access to the API.
+		 *                   restrict access to the REST API.
 		 *
 		 * @param bool $rest_enabled Whether the REST API is enabled. Default true.
 		 */
@@ -449,14 +449,14 @@ class WP_REST_Server {
 		}
 
 		/**
-		 * Filters the API response.
+		 * Filters the REST API response.
 		 *
 		 * Allows modification of the response before returning.
 		 *
 		 * @since 4.4.0
 		 * @since 4.5.0 Applied to embedded responses.
 		 *
-		 * @param WP_HTTP_Response $result  Result to send to the client. Usually a WP_REST_Response.
+		 * @param WP_HTTP_Response $result  Result to send to the client. Usually a `WP_REST_Response`.
 		 * @param WP_REST_Server   $this    Server instance.
 		 * @param WP_REST_Request  $request Request used to generate the response.
 		 */
@@ -475,7 +475,7 @@ class WP_REST_Server {
 		$this->set_status( $code );
 
 		/**
-		 * Filters whether the request has already been served.
+		 * Filters whether the REST API request has already been served.
 		 *
 		 * Allow sending the request manually - by returning true, the API result
 		 * will not be sent to the client.
@@ -484,7 +484,7 @@ class WP_REST_Server {
 		 *
 		 * @param bool             $served  Whether the request has already been served.
 		 *                                           Default false.
-		 * @param WP_HTTP_Response $result  Result to send to the client. Usually a WP_REST_Response.
+		 * @param WP_HTTP_Response $result  Result to send to the client. Usually a `WP_REST_Response`.
 		 * @param WP_REST_Request  $request Request used to generate the response.
 		 * @param WP_REST_Server   $this    Server instance.
 		 */
@@ -500,7 +500,7 @@ class WP_REST_Server {
 			$result = $this->response_to_data( $result, $embed );
 
 			/**
-			 * Filters the API response.
+			 * Filters the REST API response.
 			 *
 			 * Allows modification of the response data after inserting
 			 * embedded data (if any) and before echoing the response data.
@@ -1248,7 +1248,7 @@ class WP_REST_Server {
 		$response->add_link( 'help', 'http://v2.wp-api.org/' );
 
 		/**
-		 * Filters the API root index data.
+		 * Filters the REST API root index data.
 		 *
 		 * This contains the data describing the API. This includes information
 		 * about supported authentication schemes, supported namespaces, routes
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
index f3096444f2..893a7e08ee 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
@@ -425,7 +425,7 @@ class WP_REST_Autosaves_Controller extends WP_REST_Revisions_Controller {
 		$response->data = $this->filter_response_by_context( $response->data, $context );
 
 		/**
-		 * Filters a revision returned from the API.
+		 * Filters a revision returned from the REST API.
 		 *
 		 * Allows modification of the revision right before it is returned.
 		 *
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
index 8d85fa076f..0161d2d670 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
@@ -1120,7 +1120,7 @@ class WP_REST_Comments_Controller extends WP_REST_Controller {
 		$response->add_links( $this->prepare_links( $comment ) );
 
 		/**
-		 * Filters a comment returned from the API.
+		 * Filters a comment returned from the REST API.
 		 *
 		 * Allows modification of the comment right before it is returned.
 		 *
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-post-types-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-post-types-controller.php
index 938697157b..c4297a37c6 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-post-types-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-post-types-controller.php
@@ -241,7 +241,7 @@ class WP_REST_Post_Types_Controller extends WP_REST_Controller {
 		);
 
 		/**
-		 * Filters a post type returned from the API.
+		 * Filters a post type returned from the REST API.
 		 *
 		 * Allows modification of the post type data right before it is returned.
 		 *
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php
index 295a20f81c..8a7e5e2adc 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-revisions-controller.php
@@ -621,7 +621,7 @@ class WP_REST_Revisions_Controller extends WP_REST_Controller {
 		}
 
 		/**
-		 * Filters a revision returned from the API.
+		 * Filters a revision returned from the REST API.
 		 *
 		 * Allows modification of the revision right before it is returned.
 		 *
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 6c979c2ff6..3284017cdc 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
@@ -828,7 +828,7 @@ class WP_REST_Terms_Controller extends WP_REST_Controller {
 		$response->add_links( $this->prepare_links( $item ) );
 
 		/**
-		 * Filters a term item returned from the API.
+		 * Filters a term item returned from the REST API.
 		 *
 		 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug.
 		 *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 53e148ecbd..2b084af005 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-beta4-49609';
+$wp_version = '5.6-beta4-49610';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.