break off vs come off

break off

verb
  • To end abruptly, either temporarily or permanently. 

  • To end a relationship. 

  • To remove a piece from a whole by breaking or snapping 

come off

verb
  • To occur; to take place. 

  • To have some success; to succeed. 

  • To become detached. 

  • To appear; to seem; to project a certain quality. 

  • To escape or get off (lightly, etc.); to come out of a situation without significant harm. 

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