Brown vs Brown University

Brown and Brown University both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brown	Yes	No	No	No
Brown University	Yes	No	No	No

As nouns, Brown and Brown University are synonyms defined as:

Brown (noun)	Brown University (noun)
a university in Rhode Island	a university in Rhode Island
abolitionist who was hanged after leading an unsuccessful raid at Harper's Ferry, Virginia (1800-1859)
Scottish botanist who first observed the movement of small particles in fluids now known a Brownian motion (1773-1858)