metropolis vs Flint

metropolis and Flint both are nouns.

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

metropolis (noun)	Flint (noun)
people living in a large densely populated municipality	a city in southeast central Michigan near Detroit; automobile manufacturing
a large and densely populated urban area; may include several independent administrative districts	a river in western Georgia that flows generally south to join the Chattahoochee River at the Florida border where they form the Apalachicola River