carry on vs pull back

carry on

verb
  • To continue or proceed as before. 

  • To act or behave; especially to misbehave so as to attract attention. 

  • To talk continuously about, often in an excessively excited way 

  • To continue, maintain or pursue (:an activity or enterprise) 

  • To have an illicit sexual or flirtatious relationship. 

  • To take baggage or luggage onto an airplane, rather than check it. 

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 carry on and pull back occurred in a corpus of books? (source: Google Ngram Viewer )