iteration vs repetition

iteration and repetition both are nouns.

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

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

Other hypernyms of iteration include repeating.

iteration (noun)	repetition (noun)
doing or saying again; a repeated performance	the act of doing or performing again
(computer science) executing the same set of instructions a given number of times or until a specified result is obtained	the repeated use of the same word or word pattern as a rhetorical device
(computer science) a single execution of a set of instructions that are to be repeated	an event that repeats