repetition vs replay

repetition and replay both are nouns.

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

As nouns, replay is a hyponym of repetition; that is, replay is a word with a more specific, narrower meaning than repetition:

repetition: the act of doing or performing again
replay: the immediate rebroadcast of some action (especially sports action) that has been recorded on videotape

As nouns, replay is a hyponym of repetition; that is, replay is a word with a more specific, narrower meaning than repetition:

Other hyponyms of repetition include sequence, cycle, rematch, recurrence, return.

repetition (noun)	replay (noun)
the act of doing or performing again	the immediate rebroadcast of some action (especially sports action) that has been recorded on videotape
the repeated use of the same word or word pattern as a rhetorical device	something (especially a game) that is played again
an event that repeats

repetition (verb)	replay (verb)
	play again
	repeat a game against the same opponent
	play (a melody) again
	reproduce (a recording) on a recorder