chinook vs Oncorhynchus tshawytscha

chinook and Oncorhynchus tshawytscha both are nouns.

Word	Noun	Adjective	Verb	Adverb
chinook	Yes	No	No	No
Oncorhynchus tshawytscha	Yes	No	No	No

As nouns, chinook and Oncorhynchus tshawytscha are synonyms defined as:

chinook and Oncorhynchus tshawytscha: large Pacific salmon valued as food; adults die after spawning

Other synonyms of chinook include chinook salmon, king salmon, quinnat salmon.

chinook (noun)	Oncorhynchus tshawytscha (noun)
large Pacific salmon valued as food; adults die after spawning	large Pacific salmon valued as food; adults die after spawning
pink or white flesh of large Pacific salmon
a warm dry wind blowing down the eastern slopes of the Rockies