urban center vs Messina

urban center and Messina both are nouns.

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

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