Wuhan vs metropolis

Wuhan and metropolis both are nouns.

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

Wuhan (noun)	metropolis (noun)
a city of central China on the Chang Jiang; the commercial and industrial center of central China	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts