This is the 3955th most frequent German word.
university
An institution of higher education and research that grants academic degrees.
In this sentence, 'Universität' is used to refer to an institution of higher education specifically named.
Ich studiere an der Universität Heidelberg.
I study at the University of Heidelberg.
Here, 'Universität' is used generically to denote any such institution.
Eine gute Universität bietet viele Möglichkeiten zur Weiterbildung.
A good university offers many opportunities for further education.
In this case, 'Universität' is used to indicate the educational step after finishing school.