dethrone vs topple

dethrone

verb
  • To depose; to forcibly relieve a monarch of the monarchy. 

  • To remove (something) from a position of power or paramount importance. 

  • To remove any governing authority from power. 

  • To remove from any position of high status or power. 

topple

verb
  • To overthrow something. 

  • To overturn 

  • To totter and fall, or to lean as if about to do so. 

  • To push or throw over 

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