fabricate vs dream up

fabricate and dream up both are verbs.

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

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

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

fabricate (verb)	dream up (verb)
concoct something artificial or untrue	devise or invent
put together out of artificial or natural components or parts