idealise vs dream up

idealise and dream up both are verbs.

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

As verbs, dream up is a hypernym of idealise; that is, dream up is a word with a broader meaning than idealise:

Other hypernyms of idealise include concoct, hatch, think of, think up.

idealise (verb)	dream up (verb)
consider or render as ideal	devise or invent
form ideals