broken record vs iteration

broken record

noun
  • Someone or something that constantly repeats itself, causing annoyance. 

  • Used other than figuratively or idiomatically: see broken, record. 

iteration

noun
  • A single repetition of the code within such a repetitive process. 

  • Recital or performance a second time; repetition. 

  • A variation or version. 

  • The use of repetition in a computer program, especially in the form of a loop. 

How often have the words broken record and iteration occurred in a corpus of books? (source: Google Ngram Viewer )