fanlight vs stile

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 

stile

noun
  • A vertical component of a frame or panel, such as that of a door, window, or ladder. 

  • A set of one or more steps surmounting a fence or wall, or a narrow gate or contrived passage through a fence or wall, which in either case allows people but not livestock to pass. 

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