Coosa River vs Coosa

Coosa River and Coosa both are nouns.

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

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

Coosa River and Coosa: river that rises in northwestern Georgia and flows southwest through eastern Alabama to join the Tallapoosa River near Montgomery and form the Alabama River

Coosa River (noun)	Coosa (noun)
river that rises in northwestern Georgia and flows southwest through eastern Alabama to join the Tallapoosa River near Montgomery and form the Alabama River	river that rises in northwestern Georgia and flows southwest through eastern Alabama to join the Tallapoosa River near Montgomery and form the Alabama River