commanding vs imperatorial

commanding

adj
  • Tending to give commands, authoritarian. 

  • Impressively dominant. 

  • Dominating from above, giving a wide view 

noun
  • The act of giving a command. 

imperatorial

adj
  • Commanding; authoritative. 

  • Relating to the title or office of imperator. 

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