dispassionate vs longing

dispassionate

adj
  • not showing, and not affected by, emotion, bias, or prejudice 

longing

noun
  • An earnest and deep, not greatly passionate, but rather melancholic desire. 

  • The buying of a financial instrument with the expectation that its value will rise 

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