metropolis vs Peoria

metropolis and Peoria both are nouns.

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

metropolis (noun)	Peoria (noun)
people living in a large densely populated municipality	a city in central Illinois on the Illinois River
a large and densely populated urban area; may include several independent administrative districts