urban center vs Wichita

urban center and Wichita both are nouns.

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

urban center (noun)	Wichita (noun)
a large and densely populated urban area; may include several independent administrative districts	the Caddoan language spoken by the Wichita
	the largest city in Kansas; located in southern Kansas on the Arkansas River
	a member of the Caddo people formerly living between Kansas and central Texas