Grand Island vs town

Grand Island and town both are nouns.

Word	Noun	Adjective	Verb	Adverb
Grand Island	Yes	No	No	No
town	Yes	No	No	No

Grand Island (noun)	town (noun)
a town in south central Nebraska	the people living in a municipality smaller than a city
	an urban area with a fixed boundary that is smaller than a city
	an administrative division of a county