entertainment vs sadness

entertainment

noun
  • An activity designed to give pleasure, enjoyment, diversion, amusement, or relaxation to an audience, no matter whether the audience participates passively as in watching opera or a movie, or actively as in games. 

  • A show put on for the enjoyment or amusement of others. 

sadness

noun
  • The state or emotion of being sad. 

  • An event in one's life that causes sadness. 

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