blue jack vs silver salmon

blue jack and silver salmon both are nouns.

Word	Noun	Adjective	Verb	Adverb
blue jack	Yes	No	No	No
silver salmon	Yes	No	No	No

As nouns, blue jack and silver salmon are synonyms defined as:

blue jack and silver salmon: small salmon of northern Pacific coasts and the Great Lakes

Other synonyms of blue jack include coho, coho salmon, cohoe, Oncorhynchus kisutch.

blue jack (noun)	silver salmon (noun)
small salmon of northern Pacific coasts and the Great Lakes	small salmon of northern Pacific coasts and the Great Lakes
	fatty pinkish flesh of small salmon caught in the Pacific and Great Lakes