cod vs mock

cod and mock both are nouns.

Word	Noun	Adjective	Verb	Adverb
cod	Yes	Yes	Yes	No
mock	Yes	Yes	Yes	No

As verbs, mock is a hypernym of cod; that is, mock is a word with a broader meaning than cod:

Other hypernyms of cod include bemock.

cod (noun)	mock (noun)
major food fish of Arctic and cold-temperate waters	the act of mocking or ridiculing
lean white flesh of important North Atlantic food fish; usually baked or poached
the vessel that contains the seeds of a plant (not the seeds themselves)

cod (adjective)	mock (adjective)
payable by the recipient on delivery	constituting a copy or imitation of something

cod (verb)	mock (verb)
harass with persistent criticism or carping	treat with contempt
fool or hoax	imitate with mockery and derision