autocratic vs iron-fisted

autocratic

adj
  • Of or pertaining to the manner of an autocrat. 

  • Of or pertaining to autocracy or to an autocrat; absolute; holding independent and arbitrary powers of government. 

iron-fisted

adj
  • Characterized by ruthless control 

How often have the words autocratic and iron-fisted occurred in a corpus of books? (source: Google Ngram Viewer )