urban center vs Santa Cruz

urban center and Santa Cruz both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Santa Cruz	Yes	No	No	No

urban center (noun)	Santa Cruz (noun)
a large and densely populated urban area; may include several independent administrative districts	a town in western California on Monterey Bay; a tourist center
	a city in central Bolivia