Sao Joao de Meriti vs metropolis

Sao Joao de Meriti and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sao Joao de Meriti	Yes	No	No	No
metropolis	Yes	No	No	No

Sao Joao de Meriti (noun)	metropolis (noun)
a city in southeastern Brazil that is a residential suburb of Rio de Janeiro	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts