Luxor vs metropolis

Luxor and metropolis both are nouns.

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

Luxor (noun)	metropolis (noun)
a city in central Egypt on the east bank of the Nile that is a center for visitors to the ruins of and around Thebes	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts