carburetor vs chimney

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. 

chimney

noun
  • The smokestack of a steam locomotive. 

  • A narrow cleft in a rock face; a narrow vertical cave passage. 

  • A black eye; a shiner. 

  • The glass flue surrounding the flame of an oil lamp. 

  • A vagina. 

  • A vertical tube or hollow column used to emit environmentally polluting gaseous and solid matter (including but not limited to by-products of burning carbon- or hydrocarbon-based fuels); a flue. 

verb
  • To negotiate a chimney (narrow vertical cave passage) by pushing against the sides with back, feet, hands, etc. 

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