First, the level of running a school is different. A college is a college education, and a university is an undergraduate education.
Second, diplomas are different. Junior college only has a diploma, not a degree certificate; Universities have undergraduate diplomas and bachelor's degree certificates.
Third, the academic system is different. The university is a three-year system, and you only need to study at school for three years; Universities generally have a four-year program, and some majors have a five-year program and an eight-year program, and they study at school for at least four years.
Fourth, the admission scores at the time of admission are different. The scores of college students are relatively low, while the scores of college students are generally high.