Yangtze Kiang vs Changjiang

Yangtze Kiang and Changjiang both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yangtze Kiang	Yes	No	No	No
Changjiang	Yes	No	No	No

As nouns, Yangtze Kiang and Changjiang are synonyms defined as:

Yangtze Kiang and Changjiang: the longest river of Asia; flows eastward from Tibet into the East China Sea near Shanghai

Other synonyms of Yangtze Kiang include Chang, Chang Jiang, Yangtze, Yangtze River.

Yangtze Kiang (noun)	Changjiang (noun)
the longest river of Asia; flows eastward from Tibet into the East China Sea near Shanghai	the longest river of Asia; flows eastward from Tibet into the East China Sea near Shanghai