scare off vs send away

scare off

verb
  • To deter 

  • To cause (something) to flee by frightening it. 

send away

verb
  • To dismiss from one's presence. 

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

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

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