exposé vs unearthing

exposé

noun
  • The act of exposing somebody or something; a shameful showing up. 

  • A publication of investigative journalism that reveals hidden and often scandalous truths. 

  • A formal recital or exposition. 

unearthing

noun
  • Something unearthed; a discovery. 

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