camber vs incline

camber

verb
  • To curve upwards in the middle. 

  • To adjust the camber of the wheels of a vehicle. 

noun
  • The slope of a curved road created to minimize the effect of centrifugal force. 

  • An upward concavity in the underside of a beam, girder, or lintel; also, a slight upward concavity in a straight arch. 

  • The alignment on the roll axis of the wheels of a road vehicle, where positive camber signifies that the wheels are closer together at the bottom than the top. 

  • The curvature of an airfoil. 

  • A small enclosed dock in which timber for masts (etc.) is kept to weather. 

  • A slight convexity, arching or curvature of a surface of a road, beam, roof, ship's deck etc., so that liquids will flow off the sides. 

incline

verb
  • To slope. 

  • To bend or move (something) out of a given plane or direction, often the horizontal or vertical. 

  • To tend to do or believe something, or move or be moved in a certain direction, away from a point of view, attitude, etc. 

noun
  • A portal of a subway tunnel. 

  • A slope. 

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