Kuala Lumpur vs metropolis

Kuala Lumpur and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kuala Lumpur	Yes	No	No	No
metropolis	Yes	No	No	No

Kuala Lumpur (noun)	metropolis (noun)
the largest city and former capital of Malaysia until 2005	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts