dream up vs concoct

dream up and concoct both are verbs.

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

As verbs, dream up and concoct are synonyms defined as:

Other synonyms of dream up include hatch, think of, think up.

dream up (verb)	concoct (verb)
devise or invent	make a concoction (of) by mixing
	devise or invent
	prepare or cook by mixing ingredients
	invent