river vs Little Wabash

river and Little Wabash both are nouns.

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

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