algor vs coldness

algor

noun
  • cold, chilliness 

coldness

noun
  • The sensation resulting from exposure to low temperatures. 

  • Limited enthusiasm or affection; coolness. 

  • The relative lack of heat. 

  • The reciprocal of absolute temperature. 

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