river vs Little Wabash River

river and Little Wabash River both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
Little Wabash River	Yes	No	No	No

river (noun)	Little Wabash River (noun)
a large natural stream of water (larger than a creek)	a river in eastern Illinois that flows southeastward to the Wabash River