dispel vs vanish

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. 

vanish

verb
  • To become invisible or to move out of view unnoticed. 

  • To become equal to zero. 

  • to disappear; to kidnap 

noun
  • The brief terminal part of a vowel or vocal element, differing more or less in quality from the main part. 

  • A magic trick in which something seems to disappear. 

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