autocratic vs overweening

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. 

overweening

adj
  • Unduly confident; arrogant 

  • Exaggerated, excessive. 

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