break-off vs come-off

break-off

noun
  • A break, discontinuance, or interruption 

  • That which breaks off, or is broken off 

  • The first shot in a game of snooker or other cue-game 

verb
  • To play the first shot in a game of snooker 

come-off

noun
  • An evasive answer or postponement; an act of putting someone off. 

  • An outcome or conclusion; the way that a situation turns out. 

How often have the words break-off and come-off occurred in a corpus of books? (source: Google Ngram Viewer )