diapason vs sync

diapason

noun
  • A harmonious outpouring of sound. 

  • The range or scope of something, especially of notes in a scale, or of a particular musical instrument. 

  • A tonal grouping of the flue pipes of a pipe organ. 

  • The musical octave. 

sync

noun
  • Harmony. 

  • A music synchronization license, allowing the music to be synchronized with visual media such as films. 

verb
  • To synchronize, especially in the senses of data synchronization, time synchronization, or synchronizing music with video. 

  • To flush all pending I/O operations to disk. 

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