dream up vs cook up

dream up and cook up both are verbs.

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

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

Other hyponyms of dream up include idealise, idealize, fabricate, invent, make up, manufacture.

dream up (verb)	cook up (verb)
devise or invent	concoct something artificial or untrue
	prepare or cook by mixing ingredients