diplomatic vs parliamentary

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. 

parliamentary

adj
  • Of, relating to, or enacted by a parliament 

  • Of a class of train which, by an act of parliament, ran both ways along a line, at least once each day, at the rate of one penny per mile. 

  • Having the supreme executive and legislative power resting with a cabinet of ministers chosen from, and responsible to a parliament. 

noun
  • A parliamentary train. 

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