execute vs trephine

execute

verb
  • To carry out; to put into effect. 

  • To run, usually successfully. 

  • Coordinate term: murder 

  • To perform. 

  • To kill, especially as punishment for a capital crime. 

  • To carry out, to perform an act; to put into effect or cause to become legally binding or valid (as a contract) by so doing. 

  • To start, launch or run 

trephine

verb
  • To perforate with a trephine. 

  • To use a trephine during surgery. 

noun
  • A surgical instrument with a cylindrical blade used to remove a circular section of tissue, f.e. bone or cornea; a trepan. 

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