draw back vs pull back

draw back

verb
  • to retreat from a position 

  • to pull something back or apart 

  • to withdraw from an undertaking 

  • to move backwards 

pull back

verb
  • To retreat. 

  • To pass (the ball) into a position further from the attacking goal line. 

  • Used other than figuratively or idiomatically: see pull, back. 

  • To score when the team is losing. 

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