Nagoya vs metropolis

Nagoya and metropolis both are nouns.

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

Nagoya (noun)	metropolis (noun)
an industrial city in southern Honshu	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts