approval vs disclaimer

approval

noun
  • Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item. 

  • An expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing, or event meets requirements. 

  • An expression of favorable acceptance and encouragement; a compliment that also condones. 

disclaimer

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

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