metropolis vs Banff National Park

metropolis and Banff National Park both are nouns.

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

metropolis (noun)	Banff National Park (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