carburetor vs flue

carburetor

noun
  • A device in an internal combustion engine where fuel is vaporized and mixed with air prior to ignition. 

  • A water pipe or bong; a device or contrivance for mixing air with burning cannabis or cocaine. 

flue

noun
  • A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace). 

  • In an organ flue pipe, the opening between the lower lip and the languet. 

  • An enclosed passageway in which to direct air or other gaseous current along. 

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