disillusion vs fail to support

disillusion

verb
  • To free or deprive of illusion; to disenchant. 

noun
  • The act or process of disenchanting or freeing from a false belief. 

  • The state of having been or process of becoming freed of false belief. 

fail to support

How often have the words disillusion and fail to support occurred in a corpus of books? (source: Google Ngram Viewer )