metropolis vs Moron

metropolis and Moron both are nouns.

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

metropolis (noun)	Moron (noun)
people living in a large densely populated municipality	a city in Argentina, to the west of Buenos Aires
a large and densely populated urban area; may include several independent administrative districts