execution vs gassing

execution

noun
  • The act, manner or style of executing (actions, maneuvers, performances). 

  • The carrying out of an instruction, program or program segment by a computer. 

  • The act of putting to death or being put to death as a penalty, or actions so associated. 

  • The carrying into effect of a court judgment, or of a will. 

  • The formal process by which a contract is made valid and put into binding effect. 

  • The state of being accomplished. 

gassing

noun
  • Any similar process of singeing. 

  • boasting; insincere or empty talk 

  • The process of passing cotton goods between two rollers and exposing them to numerous minute jets of gas to burn off the small fibres. 

  • Poisoning by noxious gas. 

  • The liberation of hydrogen from an overcharged battery due to electrolysis of the electrolyte. 

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