chinook salmon vs Oncorhynchus tshawytscha

chinook salmon and Oncorhynchus tshawytscha both are nouns.

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

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

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

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

chinook salmon (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