What is the difference between a college and a university?
Some colleges are universities: The Imperial College of Science, Technology and Medicine, London; University College London; these award degrees in their own right.

Some colleges are listed bodies of collegiate universities: Merton College, University of Oxford; Churchill College, University of Cambridge. These do not award degrees in their own right; the parent university awards the degrees. Some teaching occurs in college. Some teaching and research staff are attached to a college, and to a university-wide department; others are attached only to a department. All undergraduates are members of a college, and of the parent university.

Some colleges are residential bodies of collegiate universities, e.g. Bowland College, University of Lancaster; Halifax College, University of York. Teaching does not occur in college, and the parent university awards the degrees.

Some colleges are independent and part of no university: Ruskin College, Oxford; Working Men's College, London. These tend to make awards other than traditional degrees.

This is the situation for England. Other anglophone countries may have different arrangements.