diplomatic vs familiar

diplomatic

adj
  • Exhibiting diplomacy; exercising tact or courtesy; using discussion to avoid hard feelings, fights or arguments. 

  • describing a publication of a text which follows a single basic manuscript, but with variants in other manuscripts noted in the critical apparatus 

  • Concerning the relationships between the governments of countries. 

  • Relating to diplomatics, or the study of old texts; paleographic. 

noun
  • The science of diplomas, or the art of deciphering ancient writings and determining their age, authenticity, etc.; paleography. 

familiar

adj
  • Intimate or friendly. 

  • Of or pertaining to a family; familial. 

  • Known to one, or generally known; commonplace. 

  • Acquainted. 

noun
  • An attendant spirit, often in animal or demon form. 

  • The officer of the Inquisition who arrested suspected people. 

  • A member of a pope's or bishop's household. 

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