urban center vs Nalchik

urban center and Nalchik both are nouns.

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

urban center (noun)	Nalchik (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southwestern Russia in a valley of the Caucasus Mountains; an industrial center and health resort