academia vs prep school

academia

noun
  • Continuous study at higher education institutions; scholarship. 

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

prep school

noun
  • A private or public school intended to prepare its students to get into prestigious universities. 

  • A private primary school which prepares its pupils for the common entrance examination most commonly at the age of thirteen, and subsequent entry into public school. 

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