>>10908874Community College is usually a smaller facility that services a smaller community. The place you would go to get an associates degree, or technical qualification.
State schools are run by the state and range in quality. Since it's the state they're more open with standards to get in.
A private university is just one that's privately owned and operated so they can be as strict as they want to be on admission and curriculum.
Ivy League are usually very old rich private universities on the east coast where WASPs can send off their kid to fulfill their legacy.
Whatever, that's not a perfect explanation, but if you want a high level overview that's about as good as you can get.
They're all Colleges, the question that sets them apart is how big they are, and how much money they make.