Valparaiso vs metropolis

Valparaiso and metropolis both are nouns.

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

Valparaiso (noun)	metropolis (noun)
the chief port and second largest city of Chile; located on a wide harbor in central Chile	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts