cordial vs diplomatic

cordial

adj
  • Hearty; sincere; warm; affectionate. 

  • Tending to revive, cheer, or invigorate; giving strength or spirits. 

  • Radiating warmth and friendliness; genial. 

noun
  • A liqueur prepared using the infusion process. 

  • A pleasant-tasting medicine. 

  • A candy (or bonbon) usually made of milk chocolate, filled with small fruits (often maraschino cherries) and syrup or fondant. 

  • Anything that revives or comforts, a stimulant. 

  • A concentrated non-carbonated soft drink which is diluted with water before drinking. 

  • An individual serving of such a diluted drink. 

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 cordial and diplomatic occurred in a corpus of books? (source: Google Ngram Viewer )