satisfaction vs zeal

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. 

zeal

noun
  • The fervour or tireless devotion for a person, cause, or ideal and determination in its furtherance; diligent enthusiasm; powerful interest. 

  • The collective noun for a group of zebras. 

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