metropolis vs Antofagasta

metropolis and Antofagasta both are nouns.

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

metropolis (noun)	Antofagasta (noun)
people living in a large densely populated municipality	a port city on the Pacific in northern Chile
a large and densely populated urban area; may include several independent administrative districts