WordPress Roles and Capabilities:

Administrator – This role hold can perform every task available through the WordPress dashboard, including changing themes, modifying core files, and changing other users’ roles. Admins also have complete control over all content.  (Site Resources Only)

Super Editor- This role has all of the capabilities of the editor, with a few extra perks. The Super Editor can update sidebar widgets, the header image and the navigation menu.

Editor – This role is a great choice for users who need permission to access all of the content, but not themes, plugins, or widgets. Editors can publish, edit, or delete any page or post, including those labeled “private”. They can also moderate comments and manage categories and links. In short, editors can do almost anything with content, but they can’t change any settings.