Benghazi vs urban center

Benghazi and urban center both are nouns.

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

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