break off vs detach

break off

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

  • To end abruptly, either temporarily or permanently. 

  • To end a relationship. 

detach

verb
  • To take apart from; to take off. 

  • To separate for a special object or use. 

  • To come off something. 

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