Montego Bay vs metropolis

Montego Bay and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Montego Bay	Yes	No	No	No
metropolis	Yes	No	No	No

Montego Bay (noun)	metropolis (noun)
port and resort city in northwestern Jamaica	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts