Index: src/wp-includes/author-template.php
===================================================================
--- src/wp-includes/author-template.php	(revision 36415)
+++ src/wp-includes/author-template.php	(working copy)
@@ -326,7 +326,7 @@
 }
 
 /**
- * List all the authors of the blog, with several options available.
+ * List all the authors of the site, with several options available.
  *
  * @link https://codex.wordpress.org/Template_Tags/wp_list_authors
  *
Index: src/wp-includes/class-wp-user-query.php
===================================================================
--- src/wp-includes/class-wp-user-query.php	(revision 36415)
+++ src/wp-includes/class-wp-user-query.php	(working copy)
@@ -140,7 +140,7 @@
 	 * @param string|array $query {
 	 *     Optional. Array or string of Query parameters.
 	 *
-	 *     @type int          $blog_id             The site ID. Default is the global blog id.
+	 *     @type int          $blog_id             The site ID. Default is the current site.
 	 *     @type string|array $role                An array or a comma-separated list of role names that users must match
 	 *                                             to be included in results. Note that this is an inclusive list: users
 	 *                                             must match *each* role. Default empty.
Index: src/wp-includes/class-wp-user.php
===================================================================
--- src/wp-includes/class-wp-user.php	(revision 36416)
+++ src/wp-includes/class-wp-user.php	(working copy)
@@ -113,7 +113,7 @@
 	 *
 	 * @param int|string|stdClass|WP_User $id User's ID, a WP_User object, or a user object from the DB.
 	 * @param string $name Optional. User's username
-	 * @param int $blog_id Optional Blog ID, defaults to current blog.
+	 * @param int $blog_id Optional Site ID, defaults to current site.
 	 */
 	public function __construct( $id = 0, $name = '', $blog_id = '' ) {
 		if ( ! isset( self::$back_compat_keys ) ) {
@@ -768,13 +768,13 @@
 	}
 
 	/**
-	 * Set the blog to operate on. Defaults to the current blog.
+	 * Set the site to operate on. Defaults to the current site.
 	 *
 	 * @since 3.0.0
 	 *
 	 * @global wpdb $wpdb WordPress database abstraction object.
 	 *
-	 * @param int $blog_id Optional Blog ID, defaults to current blog.
+	 * @param int $blog_id Optional. Site ID, defaults to current site.
 	 */
 	public function for_blog( $blog_id = '' ) {
 		global $wpdb;
Index: src/wp-includes/functions.php
===================================================================
--- src/wp-includes/functions.php	(revision 36415)
+++ src/wp-includes/functions.php	(working copy)
@@ -1334,7 +1334,7 @@
 }
 
 /**
- * Test whether blog is already installed.
+ * Test whether WordPress is already installed.
  *
  * The cache will be checked first. If you have a cache plugin, which saves
  * the cache values, then this will work. If you use the default WordPress
@@ -1346,7 +1346,7 @@
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
- * @return bool Whether the blog is already installed.
+ * @return bool Whether the site is already installed.
  */
 function is_blog_installed() {
 	global $wpdb;
Index: src/wp-signup.php
===================================================================
--- src/wp-signup.php	(revision 36415)
+++ src/wp-signup.php	(working copy)
@@ -258,7 +258,7 @@
  * @since MU
  *
  * @param string $blogname The new site name
- * @param string $blog_title The new blog title
+ * @param string $blog_title The new site title.
  * @param array $errors
  */
 function signup_another_blog( $blogname = '', $blog_title = '', $errors = '' ) {
@@ -335,11 +335,11 @@
 }
 
 /**
- * Validate a new blog signup
+ * Validate a new site signup.
  *
  * @since MU
  *
- * @return null|bool True if blog signup was validated, false if error.
+ * @return null|bool True if site signup was validated, false if error.
  *                   The function halts all execution if the user is not logged in.
  */
 function validate_another_blog_signup() {
@@ -420,18 +420,18 @@
 }
 
 /**
- * Confirm a new site signup
+ * Confirm a new site signup.
  *
  * @since MU
  * @since 4.4.0 Added the `$blog_id` parameter.
  *
- * @param string $domain The domain URL
- * @param string $path The site root path
- * @param string $blog_title The blog title
- * @param string $user_name The username
- * @param string $user_email The user's email address
- * @param array  $meta Any additional meta from the 'add_signup_meta' filter in validate_blog_signup()
- * @param int    $blog_id The blog ID
+ * @param string $domain     The domain URL.
+ * @param string $path       The site root path.
+ * @param string $blog_title The site title.
+ * @param string $user_name  The username.
+ * @param string $user_email The user's email address.
+ * @param array  $meta       Any additional meta from the 'add_signup_meta' filter in validate_blog_signup().
+ * @param int    $blog_id    The site ID.
  */
 function confirm_another_blog_signup( $domain, $path, $blog_title, $user_name, $user_email = '', $meta = array(), $blog_id = 0 ) {