appeasement vs assuagement

appeasement

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

assuagement

noun
  • The action of assuaging; appeasement. 

  • An assuaging medicine or application. 

  • The condition of being assuaged. 

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