Bari vs urban center

Bari and urban center both are nouns.

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

Bari (noun)	urban center (noun)
capital city of the Apulia region on the Adriatic coast	a large and densely populated urban area; may include several independent administrative districts