leeway vs rigidity

leeway

noun
  • An adverse discrepancy or variation in a cumulative process, usually in the phrase make up leeway. 

  • The drift of a ship or aeroplane in a leeward direction. 

  • A varying degree or amount of freedom or flexibility. 

rigidity

noun
  • stickiness (of prices/wages etc.). Describing the tendency of prices and money wages to adjust to changes in the economy with a certain delay. 

  • The quality or state of being rigid; lack of pliability; the quality of resisting change of physical shape 

  • Stiffness of appearance or manner; want of ease or elegance. 

  • The amount of resistance with which a body opposes change of form. 

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