asphyxia vs stupefaction

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. 

stupefaction

noun
  • A state of insensibility; stupor. 

  • The state of extreme shock or astonishment. 

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