carelessness vs coolness

carelessness

noun
  • Lack of care; the state or quality of being careless. 

coolness

noun
  • Indifference; lack of passion or interest. 

  • The state of being cool, i.e. calm. 

  • The state of being cool, i.e. good or pleasing. 

  • The result or product of being cool, i.e. good or pleasing. 

  • The state of being cool, i.e. chilly. 

  • The result or product of being cool, i.e. chilly. 

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