tunny vs food fish

tunny and food fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
tunny	Yes	No	No	No
food fish	Yes	No	No	No

As nouns, food fish is a hypernym of tunny; that is, food fish is a word with a broader meaning than tunny:

tunny: any very large marine food and game fish of the genus Thunnus; related to mackerel; chiefly of warm waters
food fish: any fish used for food by human beings

Other hypernyms of tunny include scombroid, scombroid fish.

tunny (noun)	food fish (noun)
any very large marine food and game fish of the genus Thunnus; related to mackerel; chiefly of warm waters	any fish used for food by human beings
important warm-water fatty fish of the genus Thunnus of the family Scombridae; usually served as steaks