kill vs put down

kill

verb
  • To put to death; to extinguish the life of. 

  • To strike (a ball, etc.) with such force and placement as to make a shot that is impossible to defend against, usually winning a point. 

  • To cause great pain, discomfort, or distress to; to hurt. 

  • To punish severely. 

  • To cause (a ball, etc.) to be out of play, resulting in a stoppage of gameplay. 

  • To produce intense pain. 

  • To amaze, exceed, stun, or otherwise incapacitate. 

  • To exert oneself to an excessive degree. 

  • To exert an overwhelming effect on. 

  • To stop, cease, or render void; to terminate. 

  • To force a company out of business. 

  • To deadmelt. 

  • To render inoperative. 

  • To succeed with an audience, especially in comedy. 

  • To produce feelings of dissatisfaction or revulsion in. 

  • To use up or to waste. 

  • To cause to assume the value zero. 

  • To disconnect (a user) involuntarily from the network. 

  • To sexually penetrate in a skillful way. 

  • To overpower, overwhelm, or defeat. 

noun
  • The grounding of the ball on the opponent's court, winning the rally. 

  • Specifically, the death blow. 

  • A creek; a body of water; a channel or arm of the sea. 

  • The act of killing. 

  • The result of killing; that which has been killed. 

put down

verb
  • To euthanize (an animal). 

  • To drop someone off, or let them out of a vehicle. 

  • To make prices, or taxes, lower. 

  • To pay. 

  • To terminate a call; to hang up. 

  • To give something as a reason for something else. 

  • To add a name to a list. 

  • To insult, belittle, or demean. 

  • To halt, eliminate, stop, or squelch, often by force. 

  • To land. 

  • Used other than figuratively or idiomatically: see put, down. 

  • To execute (a person), especially extrajudicially. 

  • To write (something). 

  • To place a baby somewhere to sleep. 

  • To cease, temporarily or permanently, reading (a book). 

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