Art sez: In my experience, 'college' and 'university' are synonymous: e.g., "where did you go to college?" "I went to the University of Utah."

Correctamente, Art. But would you ask, "where did you go to university? It seems that in the U.S., you can name an institution "university," but you don't use it in a nonspecific sense.

Lighter, in what part of the world have you heard the expression, "I graduated college"?

Another one: Since I'm a Catholic seminarian, I say, "I was in the seminary." If I were Protestant, I would say "I was in seminary."

-Joe-