decapitation vs gassing

decapitation

noun
  • Beheading; the act of beheading or decapitating. 

  • The ousting or destruction of the ruling body of a government or other organization. 

  • The unseating of a senior politician. 

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 decapitation and gassing occurred in a corpus of books? (source: Google Ngram Viewer )