Heilong Jiang vs Amur

Heilong Jiang and Amur both are nouns.

Word	Noun	Adjective	Verb	Adverb
Heilong Jiang	Yes	No	No	No
Amur	Yes	No	No	No

As nouns, Heilong Jiang and Amur are synonyms defined as:

Heilong Jiang and Amur: an Asian river between China and Russia; flows into the Sea of Okhotsk

Other synonyms of Heilong Jiang include Amur River, Heilong.

Heilong Jiang (noun)	Amur (noun)
an Asian river between China and Russia; flows into the Sea of Okhotsk	an Asian river between China and Russia; flows into the Sea of Okhotsk