college 和 university 的差別在哪裡？如果不好說明，請提供一些例句。

A university is bigger than a college, and colleges can exist within a university. For example, at a university, there can be a College of Arts and Sciences, a School of Music, Business School, School of Journalism. These are all "colleges" within the larger university, and students that graduate from these different colleges will have different degrees. If a college exists on its own, it often is a small liberal arts college, with only one school. You can compare, for example, Boston College and Boston University.