urban center vs Kandahar

urban center and Kandahar both are nouns.

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

urban center (noun)	Kandahar (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southern Afghanistan; an important trading center