city vs Gloucester

city and Gloucester both are nouns.

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

city (noun)	Gloucester (noun)
people living in a large densely populated municipality	a city in southwestern England in Gloucestershire on the Severn
a large and densely populated urban area; may include several independent administrative districts	a town in northeastern Massachusetts on Cape Ann to the northeast of Boston; the harbor has been a fishing center for centuries
an incorporated administrative district established by state charter