Assuming you are referring to the types of edits in Wikipedia, they are as follows:
- Reverting vandalism
- Copy-editing
- Creating and expanding articles
- patrolling recent changes
- resolving disputes
Vandalism is any deliberate attempt to harm or destroy Wiki content, and reverting means undoing these changes. Copy-editing means improving the formatting, grammar, and style of an article, while creating and expanding articles means, well, creating or expanding articles! Patrolling recent changes means keeping an eye on new or edited content to make sure it meets Wikipedia's standards, and resolving disputes means, well, resolving disputes between users.