Messina vs urban center

Messina and urban center both are nouns.

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

Messina (noun)	urban center (noun)
a port city in northeastern Sicily on the Strait of Messina	a large and densely populated urban area; may include several independent administrative districts