concoct vs cook

concoct is not a noun while cook is a noun.

Word	Noun	Adjective	Verb	Adverb
concoct	No	No	Yes	No
cook	Yes	No	Yes	No

As verbs, cook is a hypernym of concoct; that is, cook is a word with a broader meaning than concoct:

Other hypernyms of concoct include fix, make, prepare, ready.

concoct (noun)	cook (noun)
	someone who cooks food

concoct (verb)	cook (verb)
make a concoction (of) by mixing	transform and make suitable for consumption by heating
devise or invent	transform by heating
prepare or cook by mixing ingredients	prepare for eating by applying heat
invent	prepare a hot meal
	tamper, with the purpose of deception