Zurich vs metropolis

Zurich and metropolis both are nouns.

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

Zurich (noun)	metropolis (noun)
the largest city in Switzerland; located in the northern part of the country	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts