constancy vs decision

constancy

noun
  • An unchanging quality or characteristic of a person or thing. 

  • The quality of being constant; steadiness or faithfulness in action, affections, purpose, etc. 

decision

noun
  • A choice or judgement. 

  • A result arrived at by the judges when there is no clear winner at the end of the contest. 

  • Firmness of conviction. 

  • A win or a loss awarded to a pitcher. 

  • The act of deciding. 

verb
  • To defeat an opponent by a decision of the judges, rather than by a knockout 

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