disclosure vs divulging

disclosure

noun
  • The act of revealing something. 

  • That which is disclosed; a previously hidden fact or series of facts that is made known. 

  • The making known of a previously hidden fact or series of facts to another party; the act of disclosing. 

divulging

noun
  • The act by which something is divulged. 

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