academia vs phrontistery

academia

noun
  • Continuous study at higher education institutions; scholarship. 

  • The scientific and cultural community engaged in higher education and research, taken as a whole. 

phrontistery

noun
  • An establishment devoted to education or study. 

  • A place for thinking. 

  • The toilet; the lavatory. 

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