cod vs josh

cod is a noun but josh is not a noun.

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

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

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

cod (noun)	josh (noun)
major food fish of Arctic and cold-temperate waters
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)	josh (adjective)
payable by the recipient on delivery

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