frigidity vs frost

frigidity

noun
  • Coldness of feeling, manner or quality; lack of ardor, animation or vivacity. 

  • The state of being frigid; coldness; lack of heat. 

  • Lack of natural heat and vigor of body; impotency. 

frost

noun
  • Coldness or insensibility; severity or rigidity of character. 

  • A cover of minute ice crystals on objects that are exposed to the air. Frost is formed by the same process as dew, except that the temperature of the frosted object is below freezing. 

  • The cold weather that causes these ice crystals to form. 

  • A shade of white, like that of frost. 

  • A kind of light diffuser. 

verb
  • To cover with frost. 

  • To become covered with frost. 

  • To bleach individual strands of hair while leaving adjacent strands untouched. 

  • To anger or annoy. 

  • To sharpen (the points of a horse's shoe) to prevent it from slipping on ice. 

  • To coat (something, e.g. a cake) with icing to resemble frost. 

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