New River vs river

New River and river both are nouns.

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

New River (noun)	river (noun)
a river in the southeastern United States that flows northward from North Carolina to West Virginia where it empties into the Kanawha River	a large natural stream of water (larger than a creek)