pull back vs slide off

pull back

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

  • To retreat. 

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

  • To score when the team is losing. 

slide off

verb
  • Used other than figuratively or idiomatically: see slide, off. 

  • To leave a place, a meeting, etc., without being noticed; to slip away, slip off. 

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