urban center vs Brighton

urban center and Brighton both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Brighton	Yes	No	No	No

urban center (noun)	Brighton (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in East Sussex in southern England that is a popular resort; site of the University of Sussex