WordNet sense 1 (an event that repeats):

repetition

WordNet sense 2 (do over):

take over

WordNet sense 3 (make or do or perform again):

double, duplicate, replicate, reduplicate, duplicate

WordNet sense 4 (repeat an earlier theme of a composition):

recapitulate, reprise, reprize, reprise

WordNet sense 5 (to say, state, or perform again):

iterate, reiterate, restate, retell, ingeminate

WordNet sense 6 (to say again or imitate):

echo

WordNet sense 7 (happen or occur again):

recur