calmness vs dispassion

calmness

noun
  • The state of being calm; tranquillity; silence. 

  • The product of being calm. 

dispassion

noun
  • Freedom from passion; the absence of passion; an undisturbed state; apathy. 

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