rescript vs ukase

rescript

noun
  • An ad hoc reply of a pope to some specific question of canon law or morality, without precedential force, sometimes (improper) inclusive of decretals which serve as precedents in canon law. 

  • A rewriting, a document copied or written again. 

  • A duplicate copy of a legal document. 

  • A clarification of a point of law by a monarch issued upon formal consultation by a lower magistrate. 

verb
  • To script again or anew. 

ukase

noun
  • Any absolutist order or arrogant proclamation 

  • An authoritative proclamation; an edict, especially decreed by a Russian czar or (later) emperor. 

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