urban center vs Jerez de la Frontera

urban center and Jerez de la Frontera both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Jerez de la Frontera	Yes	No	No	No

urban center (noun)	Jerez de la Frontera (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