sync vs unlink

sync

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

  • Harmony. 

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. 

unlink

verb
  • To decouple; to remove a link from, or separate the links of. 

  • To delete (a file). 

noun
  • A link that is equivalent (under ambient isotopy) to finitely many disjoint circles in the plane. 

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