spice vs unhappiness

spice

verb
  • To add spice or spices to; season. 

  • To spice up. 

noun
  • An aromatic odour. 

  • Appeal, interest; an attribute that makes something appealing, interesting, or engaging. 

  • A synthetic cannabinoid drug. 

  • The quality of being spicy. 

  • Aromatic or pungent plant matter (usually dried) used to season or flavour food. 

  • Sweets, candy. 

  • A characteristic touch or taste; smack; flavour. 

unhappiness

noun
  • The feeling of not being happy 

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