Yazoo River vs Mississippi

Yazoo River and Mississippi both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yazoo River	Yes	No	No	No
Mississippi	Yes	No	No	No

Yazoo River (noun)	Mississippi (noun)
a river that rises in west central Mississippi and flows southwest to empty into the Mississippi River above Vicksburg	a state in the Deep South on the gulf of Mexico; one of the Confederate States during the American Civil War
	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