urban center vs Long Beach

urban center and Long Beach both are nouns.

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

urban center (noun)	Long Beach (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southern California located on 8.5 miles of Pacific beachfront; was a resort until oil was discovered in 1921