commanding vs fiat

commanding

noun
  • The act of giving a command. 

adj
  • Tending to give commands, authoritarian. 

  • Impressively dominant. 

  • Dominating from above, giving a wide view 

fiat

noun
  • An arbitrary or authoritative command or order to do something; an effectual decree. 

  • Authorization, permission or (official) sanction. 

  • A warrant of a judge for certain processes. 

  • An authority for certain proceedings given by the Lord Chancellor's signature. 

  • (Pertaining to) fiat currency. 

verb
  • To make (something) happen. 

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