dispel vs topple

dispel

verb
  • To drive away or cause to vanish by scattering. 

  • To remove (fears, doubts, objections etc.) by proving them unjustified. 

noun
  • An act or instance of dispelling. 

topple

verb
  • To overturn 

  • To overthrow something. 

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

  • To push or throw over 

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