metropolis vs Banff

metropolis and Banff both are nouns.

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

metropolis (noun)	Banff (noun)
people living in a large densely populated municipality	a popular vacation spot in the Canadian Rockies
a large and densely populated urban area; may include several independent administrative districts