boredom vs emotion

boredom

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

  • The state of being bored. 

emotion

noun
  • A person's internal state of being and involuntary physiological response to an object or a situation, based on or tied to physical state and sensory data. 

  • A reaction by a non-human organism with behavioral and physiological elements similar to a person's response. 

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