urban center vs Napoli

urban center and Napoli both are nouns.

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

urban center (noun)	Napoli (noun)
a large and densely populated urban area; may include several independent administrative districts	a port and tourist center in southwestern Italy; capital of the Campania region