desire line vs riding

desire line

noun
  • A path that pedestrians or vehicles take informally rather than taking a sidewalk or set route, for example, a well-worn ribbon of dirt cutting across a patch of grass, or a path in the snow. 

riding

noun
  • A path cut through woodland. 

  • The behaviour in the motion of a vehicle, such as oscillation. 

  • The act of one who rides; a mounted excursion. 

  • Electoral district or constituency. 

  • Any of the three administrative divisions of Yorkshire and some other northern counties of England. 

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