WordPress user role determines access permission to the users of a WordPress site.
Administrator : They have full rights over a site.
Editor : They deal with the content section of a website.
Author : They only deal with their posts. They can delete their post even after publishing.
Contributor : A contributor doesn't have the right to publish their post or page. They need to send it to the administrator for review.
Subscriber : Users who are subscribed to your site can log in and update their profile.
Follower : They don't have any right. They can only read and comment on your post.
Viewer : They can only read and comment on a post.
