metropolis vs Parkersburg

metropolis and Parkersburg both are nouns.

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

metropolis (noun)	Parkersburg (noun)
people living in a large densely populated municipality	a city in northwestern West Virginia on the Ohio river
a large and densely populated urban area; may include several independent administrative districts