send away vs walk back

send away

verb
  • Used other than figuratively or idiomatically: see send, away. 

  • To send to a particular place for a long time, as a family member, an employee, etc. 

  • To dismiss from one's presence. 

walk back

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

  • To withdraw or backpedal on a statement or promise. 

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