Parkersburg vs urban center

Parkersburg and urban center both are nouns.

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

Parkersburg (noun)	urban center (noun)
a city in northwestern West Virginia on the Ohio river	a large and densely populated urban area; may include several independent administrative districts