vomit vs regurgitate

vomit is a noun but regurgitate is not a noun.

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

As verbs, vomit and regurgitate are synonyms defined as:

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

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

vomit (noun)	regurgitate (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

vomit (verb)	regurgitate (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