Mississippi vs Yazoo River

Mississippi and Yazoo River both are nouns.

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

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