comedown vs disillusionment

comedown

noun
  • A sudden drop to a lower status, condition or level; a disappointment or letdown. 

  • A calm, mellow period experienced after the initial high from taking drugs. 

disillusionment

noun
  • A feeling of disappointment, akin to depression, arising from the realization that something is not what it was expected or believed to be, possibly accompanied by philosophical angst from having one's beliefs challenged. 

  • The act of freeing from an illusion; the state of being freed therefrom. 

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