strangulation vs suffocation

strangulation

noun
  • The act of strangling or the state of being strangled. 

  • The constriction of the air passage or other body part that cuts off the flow of a fluid. 

suffocation

noun
  • A particular act of death or killing by means of asphyxia. 

  • Asphyxia—a condition in which an extreme decrease in the concentration of oxygen in the body accompanied by an increase in the concentration of carbon dioxide leads to loss of consciousness or death. 

  • A child left unattended may die of suffocation. 

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