asphyxia vs hypnosis

asphyxia

noun
  • Loss of consciousness due to the interruption of breathing and consequent anoxia. 

  • Loss of consciousness due to the body's inability to deliver oxygen to its tissues, either by the breathing of air lacking oxygen or by the inability of the blood to carry oxygen. 

hypnosis

noun
  • A trancelike state, artificially induced, in which a person has a heightened suggestibility, and in which suppressed memories may be experienced. 

  • Any of various sleep-like conditions. 

  • The art or skill of hypnotism. 

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