urban center vs Wilmington

urban center and Wilmington both are nouns.

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

urban center (noun)	Wilmington (noun)
a large and densely populated urban area; may include several independent administrative districts	the largest city in Delaware
	a town in southeastern North Carolina on the Cape Fear River