river vs Gila

river and Gila both are nouns.

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

river (noun)	Gila (noun)
a large natural stream of water (larger than a creek)	a river that rises in western New Mexico and flows westward through southern Arizona to become a tributary of the Colorado River