Colleges and Universities are basically the same thing. When a "college" has a certain amount of students enrolled (like a population) it becomes a "university". Simply, the only difference is that universities are larger colleges.

All colleges and universities are the same type of ciriculum, and have the same time frame. Associates degree is usually 2 years. Bachelors is usually 4 years, and Masters is another 2 years. Those are the normals, however depending on how many credits you transfer from high school, and you course load each term, it can be faster, or longer.