Wiesbaden vs metropolis

Wiesbaden and metropolis both are nouns.

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

Wiesbaden (noun)	metropolis (noun)
a city in western Germany; a spa since Roman times	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts