break off vs covenant

break off

verb
  • To end a relationship. 

  • To end abruptly, either temporarily or permanently. 

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

covenant

verb
  • To bind oneself in contract. 

  • To enter into, or promise something by, a covenant. 

  • To enter a formal agreement. 

  • To make a stipulation. 

noun
  • A promise, incidental to a deed or contract, either express or implied. 

  • An incidental clause in an agreement. 

  • An agreement to do or not do a particular thing. 

  • A pact or binding agreement between two or more parties. 

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