mention vs ventilation

mention

noun
  • A social media feed, a list of replies or posts mentioning a person. 

  • A speaking or notice of anything, usually in a brief or cursory manner. Used especially in the phrase make mention of. 

verb
  • To make a short reference to something. 

  • To utter a word or expression in order to refer to the expression itself, as opposed to its usual referent. 

ventilation

noun
  • An exchange of views during a discussion. 

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

  • 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 mention and ventilation occurred in a corpus of books? (source: Google Ngram Viewer )