Maybe you will have to learn about the other ranks and positions here on bitcointalk, the order starts in hierarchy like this.
Admin
Staff
Moderators
Moderators are staffs, they are the same.
You only see difference visually like a forum user displays as moderator and in another thread, you will see as staff. The difference is in a board the user is assigned as a moderator, it will be displayed as moderator. In other boards, the user is not a moderator and will be displayed as staff.
About positions, you must add: Global moderators who can moderate all boards, globally in the forum.
In handling reports, flow is moderators (local moderators) delete posts, threads. They have to submit reports with details to global moderators to ban, unban users. Admins have highest moderation power in the forum.