Campeche City vs urban center

Campeche City and urban center both are nouns.

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

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