jack salmon vs walleyed pike

jack salmon and walleyed pike both are nouns.

Word	Noun	Adjective	Verb	Adverb
jack salmon	Yes	No	No	No
walleyed pike	Yes	No	No	No

As nouns, jack salmon and walleyed pike are synonyms defined as:

Other synonyms of jack salmon include dory, Stizostedion vitreum, walleye.

jack salmon (noun)	walleyed pike (noun)
pike-like freshwater perches	pike-like freshwater perches