eye-opener vs revelation

eye-opener

noun
  • Something that provides a sudden insight, or makes something clear that was previously mysterious. 

  • A startling or shocking revelation. 

  • A strong alcoholic beverage, especially one consumed in the morning. 

  • Something that causes the eyes to open, or that opens the eyes. 

  • An attractive woman. 

revelation

noun
  • Something that is revealed. 

  • Something that turns out to be a great success. 

  • Something dramatically disclosed. 

  • A manifestation of divine truth. 

  • The act of revealing or disclosing. 

How often have the words eye-opener and revelation occurred in a corpus of books? (source: Google Ngram Viewer )