Miami Beach vs urban center

Miami Beach and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
Miami Beach	Yes	No	No	No
urban center	Yes	No	No	No

Miami Beach (noun)	urban center (noun)
a city in southeastern Florida on an island between Biscayne Bay and the Atlantic Ocean; known for fashionable resort hotels	a large and densely populated urban area; may include several independent administrative districts