disclaimer vs retraction

disclaimer

noun
  • A denial, disavowal, or renunciation, as of a title, claim, interest, estate, or trust; relinquishment or waiver of an interest or estate. 

  • A public disavowal, as of responsibility, pretensions, claims, opinions, etc. 

  • One who disclaims, disowns, or renounces. 

  • A disclosure of an interest, relationship, or the like. 

verb
  • To disclaim or disavow, as by appending a legal disclaimer. 

retraction

noun
  • An act or instance of retracting. 

  • A continuous function from a topological space onto a subspace which is the identity on that subspace. 

  • A statement printed or broadcast in a public forum which effects the withdrawal of an earlier assertion, and which concedes that the earlier assertion was in error. 

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