execute vs shirk

execute

verb
  • 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 run, usually successfully. 

  • Coordinate term: murder 

  • To carry out; to put into effect. 

  • To perform. 

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

  • To start, launch or run 

shirk

verb
  • To procure by petty fraud and trickery; to obtain by mean solicitation. 

  • To avoid, especially a duty, responsibility, etc.; to stay away from. 

  • To evade an obligation; to avoid the performance of duty, as by running away. 

noun
  • One who shirks, who avoids a duty or responsibility. 

  • The unforgivable sin of idolatry. 

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