urban center vs Jerez

urban center and Jerez both are nouns.

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

urban center (noun)	Jerez (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southwestern Spain that is famous for making sherry