repeat vs go on

repeat is a noun but go on is not a noun.

Word	Noun	Adjective	Verb	Adverb
repeat	Yes	No	Yes	No
go on	No	No	Yes	No

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

Other hypernyms of repeat include come about, fall out, hap, happen, occur, pass, pass off, take place.

repeat (noun)	go on (noun)
an event that repeats

repeat (verb)	go on (verb)
happen or occur again	come to pass
to say, state, or perform again	continue talking
to say again or imitate	start running, functioning, or operating
make or do or perform again	move forward, also in the metaphorical sense
repeat an earlier theme of a composition	continue a certain state, condition, or activity
do over