Volkhov River vs river

Volkhov River and river both are nouns.

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

Volkhov River (noun)	river (noun)
a river in northwestern Russia flowing generally north into Lake Ladoga	a large natural stream of water (larger than a creek)