river vs Outaouais

river and Outaouais both are nouns.

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

river (noun)	Outaouais (noun)
a large natural stream of water (larger than a creek)	a river in southeastern Canada that flows along the boundary between Quebec and Ontario to the Saint Lawrence River near Montreal