Nalchik vs urban center

Nalchik and urban center both are nouns.

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

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