metropolis vs Sao Joao de Meriti

metropolis and Sao Joao de Meriti both are nouns.

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

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