river vs Heilong Jiang

river and Heilong Jiang both are nouns.

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

river (noun)	Heilong Jiang (noun)
a large natural stream of water (larger than a creek)	an Asian river between China and Russia; flows into the Sea of Okhotsk