Kandahar vs urban center

Kandahar and urban center both are nouns.

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

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