Appendix A. SharePoint 2013 User Permissions and Permission Levels
Microsoft SharePoint 2013 includes 33 user permissions that determine the specific actions that users can perform on a SharePoint site. Permissions are grouped into permission levels. In essence, each permission level is a named collection of permissions that can be assigned to SharePoint users and groups.
There are a number of default permission levels available on a SharePoint 2013 site. For example, seven default permission levels are available on every team site: View Only, Read, Contribute, Edit, Design, Full Control, and Limited Access. When your site is based on a site template other than the Team site template, you will see additional default SharePoint permission levels ...