cod vs chaff

cod and chaff both are nouns.

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

As verbs, chaff is a hyponym of cod; that is, chaff is a word with a more specific, narrower meaning than cod:

Other hyponyms of cod include barrack, flout, gibe, jeer, scoff, banter, jolly, josh, kid.

cod (noun)	chaff (noun)
major food fish of Arctic and cold-temperate waters	foil in thin strips; ejected into the air as a radar countermeasure
lean white flesh of important North Atlantic food fish; usually baked or poached	material consisting of seed coverings and small pieces of stem or leaves that have been separated from the seeds
the vessel that contains the seeds of a plant (not the seeds themselves)

cod (adjective)	chaff (adjective)
payable by the recipient on delivery

cod (verb)	chaff (verb)
harass with persistent criticism or carping	be silly or tease one another
fool or hoax