prepare vs cook up

prepare and cook up both are verbs.

Word	Noun	Adjective	Verb	Adverb
prepare	No	No	Yes	No
cook up	No	No	Yes	No

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

prepare (verb)	cook up (verb)
make ready or suitable or equip in advance for a particular purpose or for some use, event, etc	concoct something artificial or untrue
undergo training or instruction in preparation for a particular role, function, or profession	prepare or cook by mixing ingredients
create by training and teaching
arrange by systematic planning and united effort
prepare for eating by applying heat
to prepare verbally, either for written or spoken delivery
lead up to and soften by sounding the dissonant note in it as a consonant note in the preceding chord
educate for a future role or function