cook vs chef

cook and chef both are nouns.

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

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

Other hyponyms of cook include cookie, cooky, fry cook, preserver, roaster, seasoner.

cook (noun)	chef (noun)
someone who cooks food	a professional cook

cook (verb)	chef (verb)
transform and make suitable for consumption by heating
transform by heating
prepare for eating by applying heat
prepare a hot meal
tamper, with the purpose of deception