Mississippi vs Columbus

Mississippi and Columbus both are nouns.

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

Mississippi (noun)	Columbus (noun)
a state in the Deep South on the gulf of Mexico; one of the Confederate States during the American Civil War	the state capital of Ohio; located in the center of the state; site of Ohio State University
a major North American river and the chief river of the United States; rises in northern Minnesota and flows southward into the Gulf of Mexico	a city in western Georgia on the Chattahoochee River; industrial center
	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)