execute vs slay

execute

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

  • To run, usually successfully. 

  • Coordinate term: murder 

  • To carry out; to put into effect. 

  • To perform. 

  • 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 

slay

verb
  • To kill; to murder. 

  • To defeat; to overcome (in a competition or contest). 

  • To amaze, stun, or otherwise incapacitate by excellence; to excel at something. 

  • To have sex with. 

  • To delight or overwhelm, especially with laughter. 

  • To eradicate or stamp out. 

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