Volkhov River vs Volkhov

Volkhov River and Volkhov both are nouns.

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

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

Volkhov River and Volkhov: a river in northwestern Russia flowing generally north into Lake Ladoga

Volkhov River (noun)	Volkhov (noun)
a river in northwestern Russia flowing generally north into Lake Ladoga	a river in northwestern Russia flowing generally north into Lake Ladoga