metropolis vs Limerick

metropolis and Limerick both are nouns.

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

metropolis (noun)	Limerick (noun)
people living in a large densely populated municipality	port city in southwestern Ireland
a large and densely populated urban area; may include several independent administrative districts