disdain vs unconcern

disdain

noun
  • A feeling of contempt or scorn. 

verb
  • To regard (someone or something) with strong contempt. 

unconcern

noun
  • Lack of interest or care; indifference or apathy. 

  • Freedom from worry or apprehensiveness; insouciance or nonchalance. 

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