repetition vs continuance

repetition and continuance both are nouns.

Word	Noun	Adjective	Verb	Adverb
repetition	Yes	No	No	No
continuance	Yes	No	No	No

As nouns, continuance is a hypernym of repetition; that is, continuance is a word with a broader meaning than repetition:

Other hypernyms of repetition include continuation.

repetition (noun)	continuance (noun)
the act of doing or performing again	the act of continuing an activity without interruption
the repeated use of the same word or word pattern as a rhetorical device	the property of enduring or continuing in time
an event that repeats	the period of time during which something continues