metropolis vs Nyala

metropolis and Nyala both are nouns.

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

metropolis (noun)	Nyala (noun)
people living in a large densely populated municipality	city in Sudan
a large and densely populated urban area; may include several independent administrative districts