fanlight vs thwart

fanlight

noun
  • a semicircular or semioval window over a door or other window, normally having a fan-like structure of ribs; sometimes hinged to the transom 

  • an electric fan, usually a ceiling fan, that is also a light fixture 

thwart

noun
  • A brace, perpendicular to the keel, that helps maintain the beam (“breadth”) of a marine vessel against external water pressure and that may serve to support the rail. 

  • A seat across a boat on which a rower may sit. 

  • An act of thwarting; something which thwarts; a hindrance, an obstacle. 

verb
  • To cause to fail; to frustrate, to prevent. 

adj
  • Placed or situated across something else; cross, oblique, transverse. 

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