appeasement vs backhanded compliment

appeasement

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

backhanded compliment

noun
  • An insult disguised as a compliment; a compliment which can be interpreted as an insult. 

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