city vs Grenoble

city and Grenoble both are nouns.

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

city (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
an incorporated administrative district established by state charter