urban center vs Benghazi

urban center and Benghazi both are nouns.

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

urban center (noun)	Benghazi (noun)
a large and densely populated urban area; may include several independent administrative districts	port in northern Libya on the Gulf of Sidra; formerly a joint capital of Libya with Tripoli