metropolis vs Fort Wayne

metropolis and Fort Wayne both are nouns.

Word	Noun	Adjective	Verb	Adverb
metropolis	Yes	No	No	No
Fort Wayne	Yes	No	No	No

metropolis (noun)	Fort Wayne (noun)
people living in a large densely populated municipality	a city in northeastern Indiana
a large and densely populated urban area; may include several independent administrative districts