abstention vs toleration

abstention

noun
  • Non-participation in the political world; as a country avoiding international affairs. 

  • The act of declining to vote on a particular issue. 

  • The act of abstaining or refraining (from). 

toleration

noun
  • The allowance of something not explicitly approved; tolerance, forbearance. 

  • Specifically, the allowance by a government (or other ruling power) of the exercise of religion beyond the state established faith. 

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