regurgitate vs repeat

regurgitate is not a noun while repeat is a noun.

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

As verbs, repeat is a hypernym of regurgitate; that is, repeat is a word with a broader meaning than regurgitate:

Other hypernyms of regurgitate include echo.

regurgitate (noun)	repeat (noun)
	an event that repeats

regurgitate (verb)	repeat (verb)
eject the contents of the stomach through the mouth	happen or occur again
repeat after memorization	to say, state, or perform again
feed through the beak by regurgitating previously swallowed food	to say again or imitate
pour or rush back	make or do or perform again
	repeat an earlier theme of a composition
	do over