Documentation:WordPress Basics/Basics 2 Guide/userroles

WordPress has five pre-defined Roles:

• Administrator - Somebody who has access to all the administration features
• Editor – Somebody who can publish posts, manage posts as well as manage other people’s posts, etc.
• Author – Somebody who can publish and manage their own posts
• Contributor – Somebody who can write and manage their posts but not publish posts
• Subscriber – Somebody who can read comments/comment/receive news letters, etc.

For a detailed look at the roles and capabilities, please refer to Roles and Capabilities in the WordPress Codex.