academia vs cram 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. 

cram school

noun
  • A specialized school that trains students to meet particular goals, most commonly to pass the entrance examinations of high schools or universities. 

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