Chang vs Chang Jiang

Chang and Chang Jiang both are nouns.

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

As nouns, Chang and Chang Jiang are synonyms defined as:

Chang and Chang Jiang: the longest river of Asia; flows eastward from Tibet into the East China Sea near Shanghai

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

Chang (noun)	Chang Jiang (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