metropolis vs Nanchang

metropolis and Nanchang both are nouns.

Word	Noun	Adjective	Verb	Adverb
metropolis	Yes	No	No	No
Nanchang	Yes	No	No	No

metropolis (noun)	Nanchang (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