Oncorhynchus tshawytscha vs chinook salmon

Oncorhynchus tshawytscha and chinook salmon both are nouns.

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

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

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

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

Oncorhynchus tshawytscha (noun)	chinook salmon (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