Omdurman vs metropolis

Omdurman and metropolis both are nouns.

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

Omdurman (noun)	metropolis (noun)
a battle (1898) in which an English and Egyptian army under Kitchener defeated the Sudanese	people living in a large densely populated municipality
a city of Sudan; located in the central Sudan on the White Nile opposite Khartoum	a large and densely populated urban area; may include several independent administrative districts