chip in vs sync

chip in

verb
  • To ante; to put into the pot the amount of chips or money required to continue. 

  • To put a chip shot in the hole. 

  • To make a contribution; help in a small way; especially, to pay for a part of something. 

  • To contribute. 

  • To interrupt a discussion for the purpose of making a comment. 

sync

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

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

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

  • Harmony. 

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