diplomatic vs official

diplomatic

adj
  • Concerning the relationships between the governments of countries. 

  • 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 

  • 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. 

official

adj
  • Of or pertaining to an office or public trust. 

  • Discharging an office or function. 

  • Relating to an office; especially, to a subordinate executive officer or attendant. 

  • True, real, beyond doubt. 

  • Approved by authority; authorized. 

  • Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority 

  • Dubious but recognized by authorities as truth and/or canon. 

  • Listed in a national pharmacopeia. 

  • Relating to an ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction. 

  • Sanctioned by the pharmacopoeia; appointed to be used in medicine; officinal. 

noun
  • An office holder, a person holding an official position in government, sports, or other organization. 

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