derision vs firmness

derision

noun
  • Something to be derided; a laughing stock. 

  • Act of treating with disdain. 

firmness

noun
  • security; steadfastness; good grip 

  • strictness; mental strength 

  • physical durability; rigidness (of material) 

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