Trento vs metropolis

Trento and metropolis both are nouns.

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

Trento (noun)	metropolis (noun)
a city in northern Italy (northwest of Venice) on the River Adige; the site of the Council of Trent	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts