Nan-chang vs city

Nan-chang and city both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nan-chang	Yes	No	No	No
city	Yes	No	No	No

Nan-chang (noun)	city (noun)
a walled city in southeastern China on the Gan Jiang	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter