metropolis vs Goma

metropolis and Goma both are nouns.

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

metropolis (noun)	Goma (noun)
people living in a large densely populated municipality	a city in eastern Congo at the northern end of Lake Kivu near the border with Rwanda
a large and densely populated urban area; may include several independent administrative districts