narcotize vs put to sleep

narcotize

verb
  • To use a narcotic in order to make (someone) drowsy or insensible; to anesthetize, to drug. 

  • To make into a narcotic. 

  • To dull the senses of (a person, place etc.). 

put to sleep

verb
  • To give a general anesthetic prior to surgery. 

  • To help (someone) to bed; put to bed. 

  • To kill an animal painlessly, often with an injection; to euthanize. 

  • To cause (someone) to sleep. 

  • To render dormant. 

How often have the words narcotize and put to sleep occurred in a corpus of books? (source: Google Ngram Viewer )