perplexity vs satisfaction

perplexity

noun
  • The state or quality of being perplexed; puzzled or confused. 

  • Something that perplexes. 

  • In information theory, a measurement of how well a probability distribution or model predicts a sample. 

satisfaction

noun
  • A fulfilment of a need or desire. 

  • A reparation for an injury or loss. 

  • The pleasure obtained by such fulfillment. 

  • A vindication for a wrong suffered. 

  • The source of such gratification. 

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