metropolis vs Gafsa

metropolis and Gafsa both are nouns.

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

metropolis (noun)	Gafsa (noun)
people living in a large densely populated municipality	a city in west central Tunisia
a large and densely populated urban area; may include several independent administrative districts