urban center vs Campeche City

urban center and Campeche City both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Campeche City	Yes	No	No	No

urban center (noun)	Campeche City (noun)
a large and densely populated urban area; may include several independent administrative districts	a Mexican city on the Bay of Campeche