iteration vs tune-up

iteration

noun
  • Recital or performance a second time; repetition. 

  • A variation or version. 

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

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

tune-up

noun
  • A series of preparations for vigorous exercise; a warm-up 

  • A series of adjustments to an engine in order to improve its performance 

  • A match or race (frequently one exhibition in nature) contested as preparation for a match or race of high stakes. 

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