Aberdeen vs urban center

Aberdeen and urban center both are nouns.

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

Aberdeen (noun)	urban center (noun)
a city in northeastern Scotland on the North Sea	a large and densely populated urban area; may include several independent administrative districts
a town in northeastern Maryland
a town in northeastern South Dakota
a town in western Washington