breathing vs ventilation

breathing

noun
  • The act of respiration; a single instance of this. 

  • Aspiration; secret prayer. 

  • Any gentle influence or operation; inspiration. 

  • A diacritical mark indicating aspiration or lack thereof. 

ventilation

noun
  • The bodily process of breathing; the inhalation of air to provide oxygen, and the exhalation of spent air to remove carbon dioxide. 

  • An exchange of views during a discussion. 

  • The mechanical system used to assist breathing. 

  • The replacement of stale or noxious air with fresh. 

  • The public exposure of an issue or topic. 

  • The mechanical system used to circulate and replace air. 

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