chimney vs grate

chimney

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

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

  • A black eye; a shiner. 

  • The smokestack of a steam locomotive. 

  • 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. 

grate

noun
  • A frame or bed, or kind of basket, of iron bars, for holding fuel while burning. 

  • A horizontal metal grill through which water, ash, or small objects can fall, while larger objects cannot. 

  • A grapper, a metal ring on a lance behind the grip. 

verb
  • To annoy. 

  • To shred (things, usually foodstuffs), by rubbing across a grater. 

  • To get on one's nerves; to irritate, annoy. 

  • To make an unpleasant rasping sound, often as the result of rubbing against something. 

  • To furnish with grates; to protect with a grating or crossbars. 

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