What is the difference between Florida State University and Atlantic University?

There is no university officially named "Atlantic University" that is widely recognized. There may be smaller, less known institutions using that name, or it could be a misspelling.

Florida State University (FSU) is a large, well-established public research university in Tallahassee, Florida, with a long history and high profile. It's known for its strong academic programs, particularly in areas like business, law, and communications.

If you meant a different university when you wrote "Atlantic University," please clarify the name or location.