town vs Columbus

town and Columbus both are nouns.

Word	Noun	Adjective	Verb	Adverb
town	Yes	No	No	No
Columbus	Yes	No	No	No

town (noun)	Columbus (noun)
the people living in a municipality smaller than a city	the state capital of Ohio; located in the center of the state; site of Ohio State University
an urban area with a fixed boundary that is smaller than a city	a city in western Georgia on the Chattahoochee River; industrial center
an administrative division of a county	a town in eastern Mississippi near the border with Alabama
	Italian navigator who discovered the New World in the service of Spain while looking for a route to China (1451-1506)