Chang Jiang vs river

Chang Jiang and river both are nouns.

Word	Noun	Adjective	Verb	Adverb
Chang Jiang	Yes	No	No	No
river	Yes	No	No	No

Chang Jiang (noun)	river (noun)
the longest river of Asia; flows eastward from Tibet into the East China Sea near Shanghai	a large natural stream of water (larger than a creek)