dear vs diplomatic

dear

adj
  • A formal way to start (often after my) addressing somebody one likes or regards kindly. 

  • A formal way to start (possibly after my) addressing somebody at the beginning of a letter, memo etc. 

  • Loving, affectionate, heartfelt 

  • Loved; lovable. 

  • Precious to or greatly valued by someone. 

  • An ironic way to start (often after my) addressing an inferior. 

  • Lovely; kind. 

  • High in price; expensive. 

  • Severe, or severely affected; sore. 

adv
  • Dearly; at a high price. 

noun
  • An affectionate, familiar term of address, such as used between husband and wife. 

  • A beloved person. 

  • A very kind, loving person. 

  • An elderly person, especially a woman. 

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. 

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