fabricate vs cook up

fabricate and cook up both are verbs.

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

As verbs, fabricate and cook up are synonyms defined as:

Other synonyms of fabricate include invent, make up, manufacture.

fabricate (verb)	cook up (verb)
concoct something artificial or untrue	concoct something artificial or untrue
put together out of artificial or natural components or parts	prepare or cook by mixing ingredients