city vs Wilmington

city and Wilmington both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
Wilmington	Yes	No	No	No

city (noun)	Wilmington (noun)
people living in a large densely populated municipality	the largest city in Delaware
a large and densely populated urban area; may include several independent administrative districts	a town in southeastern North Carolina on the Cape Fear River
an incorporated administrative district established by state charter