autocratic vs tentative

autocratic

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

  • Of or pertaining to the manner of an autocrat. 

tentative

noun
  • A trial; an experiment; an attempt. 

adj
  • restrained; polite; feeling one's way, not using full force. 

  • Uncertain; subject to future change. 

  • Of or pertaining to a trial or trials; essaying; experimental. 

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