perseverate vs repeat

perseverate is not a noun while repeat is a noun.

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

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

Other hypernyms of perseverate include ingeminate, iterate, reiterate, restate, retell.

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

perseverate (verb)	repeat (verb)
repeat a response after the cessation of the original stimulus	happen or occur again
	to say, state, or perform again
	to say again or imitate
	make or do or perform again
	repeat an earlier theme of a composition
	do over