river vs Chu Kiang

river and Chu Kiang both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
Chu Kiang	Yes	No	No	No

river (noun)	Chu Kiang (noun)
a large natural stream of water (larger than a creek)	a river in southeast China that flows into the South China Sea