congestion vs suffocation

congestion

noun
  • An excess of mucus or fluid in the respiratory system; congestion of the lungs, or nasal congestion. 

  • An excess of traffic; usually not a complete standstill of traffic, so usually not synonymous with traffic jam. 

  • edema, water retention, swelling, enlargement of a body part because of fluid retention in tissues and vessels 

  • An accumulation or buildup, the act of gathering into a heap or mass. 

  • Blocking up of the capillary and other blood vessels, etc., in any locality or organ (often producing other morbid symptoms); local hypermic, active or passive 

suffocation

noun
  • 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. 

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

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