Super Admin – somebody with access to the site network administration features and all other features. See the Create a Network article.
Administrator (slug:administrator) – somebody who has access to all the administration features within a single site.
Editor (slug:editor) – somebody who can publish and manage posts including the posts of other users.
Author (slug:author) – somebody who can publish and manage their own posts.
Contributor (slug:contributor) – somebody who can write and manage their own posts but cannot publish them.
Subscriber (slug:subscriber) – somebody who can only manage their profile.