Abilene vs urban center

Abilene and urban center both are nouns.

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

Abilene (noun)	urban center (noun)
a city in central Texas	a large and densely populated urban area; may include several independent administrative districts
a town in central Kansas to the west of Topeka; home of Dwight D. Eisenhower