regurgitate vs vomit

regurgitate is not a noun while vomit is a noun.

Word	Noun	Adjective	Verb	Adverb
regurgitate	No	No	Yes	No
vomit	Yes	No	Yes	No

As verbs, regurgitate and vomit are synonyms defined as:

regurgitate and vomit: eject the contents of the stomach through the mouth

Other synonyms of regurgitate include barf, be sick, cast, cat, chuck, disgorge, honk, puke, purge, regorge, retch, sick, spew, spue, throw up, upchuck, vomit up.

regurgitate (noun)	vomit (noun)
	the reflex act of ejecting the contents of the stomach through the mouth
	a medicine that induces nausea and vomiting
	the matter ejected in vomiting

regurgitate (verb)	vomit (verb)
eject the contents of the stomach through the mouth	eject the contents of the stomach through the mouth
repeat after memorization
feed through the beak by regurgitating previously swallowed food
pour or rush back