metropolis vs Grenoble

metropolis and Grenoble both are nouns.

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

metropolis (noun)	Grenoble (noun)
people living in a large densely populated municipality	a city in southeastern France on the Isere River
a large and densely populated urban area; may include several independent administrative districts