advertisement vs revelation

advertisement

noun
  • A commercial solicitation designed to sell some commodity, service or similar. 

  • A public notice. 

  • In gin rummy, the discarding of a card of one's preferred suit so as to mislead the opponent into thinking you do not want it. 

  • A recommendation of a particular product, service or person. 

revelation

noun
  • The act of revealing or disclosing. 

  • Something that turns out to be a great success. 

  • Something dramatically disclosed. 

  • A manifestation of divine truth. 

  • Something that is revealed. 

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