urban center vs Bakersfield

urban center and Bakersfield both are nouns.

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

urban center (noun)	Bakersfield (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in south central California at the southern end of the San Joaquin Valley