Al-Mukalla vs metropolis

Al-Mukalla and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Al-Mukalla	Yes	No	No	No
metropolis	Yes	No	No	No

Al-Mukalla (noun)	metropolis (noun)
a port in southern Yemen on the Gulf of Aden to the east of Aden	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts