river vs Columbia

river and Columbia both are nouns.

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

river (noun)	Columbia (noun)
a large natural stream of water (larger than a creek)	a university in New York City
	capital and largest city in South Carolina; located in central South Carolina
	a university town in central Missouri
	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