academy vs cram school

academy

noun
  • An institution for the study of higher learning; a college or a university; typically a private school. 

  • A society of learned people united for the advancement of the arts and sciences, and literature, or some particular art or science. 

  • Plato's philosophical system based on skepticism; Plato's followers. 

  • The garden where Plato taught. 

  • A school directly funded by central government, independent of local control. 

  • A body of established opinion in a particular field, regarded as authoritative. 

  • A school or place of training in which some special art is taught. 

  • Academia. 

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 academy and cram school occurred in a corpus of books? (source: Google Ngram Viewer )