eager vs longing

eager

adj
  • Not employing lazy evaluation; calculating results immediately, rather than deferring calculation until they are required. 

  • Desirous; keen to do or obtain something. 

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 eager and longing occurred in a corpus of books? (source: Google Ngram Viewer )