river vs Housatonic

river and Housatonic both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
Housatonic	Yes	No	No	No

river (noun)	Housatonic (noun)
a large natural stream of water (larger than a creek)	a river that rises in western Massachusetts and flows south through Connecticut to empty into Long Island Sound