dream up vs invent

dream up and invent both are verbs.

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

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

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

dream up (verb)	invent (verb)
devise or invent	come up with (an idea, plan, explanation, theory, or principle) after a mental effort
	concoct something artificial or untrue