abstention vs appeasement

abstention

noun
  • The act of abstaining or refraining (from). 

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

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

appeasement

noun
  • The state of being appeased; the policy of giving in to demands in order to preserve the peace. 

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