schrod vs codfish

schrod and codfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
schrod	Yes	No	No	No
codfish	Yes	No	No	No

As nouns, codfish is a hypernym of schrod; that is, codfish is a word with a broader meaning than schrod:

schrod: young Atlantic cod or haddock especially one split and boned for cooking
codfish: major food fish of Arctic and cold-temperate waters

Other hypernyms of schrod include cod.

schrod (noun)	codfish (noun)
young Atlantic cod or haddock especially one split and boned for cooking	major food fish of Arctic and cold-temperate waters
flesh of young Atlantic cod weighing up to 2 pounds; also young haddock and pollock; often broiled	lean white flesh of important North Atlantic food fish; usually baked or poached