redundancy vs repetition

redundancy and repetition both are nouns.

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

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

Other hypernyms of redundancy include repeating.

redundancy (noun)	repetition (noun)
repetition of an act needlessly	the act of doing or performing again
the attribute of being superfluous and unneeded	the repeated use of the same word or word pattern as a rhetorical device
(electronics) a system design that duplicates components to provide alternatives in case one component fails	an event that repeats
repetition of messages to reduce the probability of errors in transmission