A campus is everything that belongs to an institution, it could be building, sports fields, dorms, etc…
A college campus is an specific institution in one field, such as Law School. On the other hand, a university campus is form by all the different faculties that could be in an institution.
The facilities varies among each institution. It depends a lot on the amount of student enrolled in the institution, plus the amount of different sports they participate in, the different degrees they offer, etc.