cook vs roast

cook and roast both are nouns.

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

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

cook (noun)	roast (noun)
someone who cooks food	negative criticism
	a piece of meat roasted or for roasting and of a size for slicing into more than one portion

cook (adjective)	roast (adjective)
	(meat) cooked by dry heat in an oven

cook (verb)	roast (verb)
transform and make suitable for consumption by heating	cook with dry heat, usually in an oven
transform by heating	subject to laughter or ridicule
prepare for eating by applying heat
prepare a hot meal
tamper, with the purpose of deception