boredom vs stimulation

boredom

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

  • The state of being bored. 

stimulation

noun
  • An activity causing excitement or pleasure; the act of stimulating. 

  • A pushing or goading toward action. 

  • Any action or condition that creates a response; sensory input. 

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