Yazoo vs Yazoo River

Yazoo and Yazoo River both are nouns.

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

As nouns, Yazoo and Yazoo River are synonyms defined as:

Yazoo and Yazoo River: a river that rises in west central Mississippi and flows southwest to empty into the Mississippi River above Vicksburg

Yazoo (noun)	Yazoo River (noun)
a river that rises in west central Mississippi and flows southwest to empty into the Mississippi River above Vicksburg	a river that rises in west central Mississippi and flows southwest to empty into the Mississippi River above Vicksburg