Rochester vs urban center

Rochester and urban center both are nouns.

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

Rochester (noun)	urban center (noun)
a city in western New York; a center of the photographic equipment industry	a large and densely populated urban area; may include several independent administrative districts
a town in southeast Minnesota