boredom vs vigour

boredom

noun
  • An instance or period of being bored; A bored state. 

  • The state of being bored. 

vigour

noun
  • Strength or force in animal or vegetable nature or action. 

  • Strength; efficacy; potency. 

  • Active strength or force of body or mind; capacity for exertion, physically, intellectually, or morally; energy. 

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