austerity vs rigidity

austerity

noun
  • Severity of manners or life; extreme rigor or strictness; harsh discipline. 

  • A policy of deficit-cutting, which by definition requires lower spending, higher taxes, or both. 

  • Freedom from adornment; plainness; severe simplicity. 

rigidity

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

  • 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 

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

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