yes - both the same ie someone who has a high number of rights, but is not an admin and can't quite do everything.
IMO there should be
users
moderators
group moderators
super moderators
admins
The group moderators would be an assigned group that has rights to edit posts for example, and people can be added to that group by the admin - but these users are not necessarily moderators in their own right. If they then edit a post it would say edited by a group moderator
