Genoa vs urban center

Genoa and urban center both are nouns.

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

Genoa (noun)	urban center (noun)
a seaport in northwestern Italy; provincial capital of Liguria	a large and densely populated urban area; may include several independent administrative districts