regurgitate vs regurgitation

regurgitate is not a noun while regurgitation is a noun.

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

regurgitate (noun)	regurgitation (noun)
	the reflex act of ejecting the contents of the stomach through the mouth
	recall after rote memorization
	backflow of blood through a defective heart valve

regurgitate (verb)	regurgitation (verb)
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