surcingle vs white horse

surcingle

noun
  • A piece of tack wrapped around the belly of a horse, to use when longeing. 

  • A girdle to fasten a garment, especially a cassock. 

  • A long unpadded strap to pass over and keep in place a blanket, pack or saddle on an animal. 

verb
  • To fasten with a surcingle. 

white horse

noun
  • Used other than figuratively or idiomatically: see white, horse. 

  • A recreational drug in the form of white powder: heroin or cocaine. 

  • A large mass of tough sinewy substance in the head of sperm whales, just above the upper jaw and extending in streaks into the junk above it. It resembles blubber, but contains no oil. 

  • Any of several horse-shaped chalk figures in England, such as the Uffington White Horse. 

  • A wave that is blown by the wind such that its crest is broken up and appears white and foamy; a whitecap. 

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