Nanning vs metropolis

Nanning and metropolis both are nouns.

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

Nanning (noun)	metropolis (noun)
an industrial city in southern China	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts