mockery vs seriousness

mockery

noun
  • The action of mocking; ridicule, derision. 

  • Mimicry, imitation, now usually in a derogatory sense; a travesty, a ridiculous simulacrum. 

  • Something so lacking in necessary qualities as to inspire ridicule; a laughing-stock. 

seriousness

noun
  • The state or quality of being serious. 

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