city vs Nan-chang

city and Nan-chang both are nouns.

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

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