redundancy vs repeating

redundancy and repeating both are nouns.

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

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

Other hypernyms of redundancy include repetition.

redundancy (noun)	repeating (noun)
repetition of an act needlessly	the act of doing or performing again
the attribute of being superfluous and unneeded
(electronics) a system design that duplicates components to provide alternatives in case one component fails
repetition of messages to reduce the probability of errors in transmission