overthrow vs topple

overthrow

verb
  • To throw (something) so that it goes too far. 

  • To bring about the downfall of (a government, etc.), especially by force. 

noun
  • A throw that goes too far. 

  • A run scored by the batting side when a fielder throws the ball back to the infield, whence it continues to the opposite outfield. 

  • A removal, especially of a ruler or government, by force or threat of force. 

topple

verb
  • To push or throw over 

  • To overturn 

  • To overthrow something. 

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

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