Provosts, deans and presidents.

Before being given this assignment, I never even knew a provost existed. A provost happens to be the person in charge of activities around the school; not only in one department but in the entire university. Additionally, the provost is responsible for funding these activities as well as managing them.
A chancellor however, is different from a provost in that a chancellor is the head of the university as a whole as opposed to being head of just the activities.
The president of the school has more power than a provost. The president and the chancellor have very similar tasks. Sometimes, the chancellor is mistaken to be the president. A dean is in power as well. However, there are many deans because every department has one. Deans are responsible for one department in the university.


http://www.provost.umich.edu/about/what.html

http://www.cam.ac.uk/cambuniv/pubs/works/chancellor.html