blower vs ventilator

blower

noun
  • Any device that blows. 

  • A telephone service providing betting odds and commentary, relayed to customers in a bookmaker's shop via loudspeaker. 

  • The whale; so called by seamen, from its habit of spouting up a column of water. 

  • A small fish of the Atlantic coast, Sphoeroides maculatus; the puffer. 

  • A ducted fan, usually part of a heating, ventilation, and/or air conditioning system. 

  • Telephone. 

  • A person who blows. 

ventilator

noun
  • A device that circulates fresh air and expels stale or noxious air. 

  • A machine that moves breathable air into and out of the lungs of a patient who is unable to breathe sufficiently. 

  • Some behaviour or happening that relieves a tense atmosphere or situation. 

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