Oran vs metropolis

Oran and metropolis both are nouns.

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

Oran (noun)	metropolis (noun)
a port city in northwestern Algeria and the country's 2nd largest city	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts