commandment vs ukase

commandment

noun
  • A divinely ordained command, especially one of the Ten Commandments. 

  • The offence of commanding or inducing another to violate the law. 

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 commandment and ukase occurred in a corpus of books? (source: Google Ngram Viewer )