Columbia vs town

Columbia and town both are nouns.

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

Columbia (noun)	town (noun)
a university in New York City	the people living in a municipality smaller than a city
capital and largest city in South Carolina; located in central South Carolina	an urban area with a fixed boundary that is smaller than a city
a university town in central Missouri	an administrative division of a county
a town in west central Tennessee
a North American river; rises in southwestern Canada and flows southward across Washington to form the border between Washington and Oregon before emptying into the Pacific; known for its salmon runs in the spring