academy vs polytechnic

academy

noun
  • Academia. 

  • 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. 

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

polytechnic

noun
  • A three-year post-secondary vocational training institute, equivalent of community college in the U.S. or TAFE in Australia. 

adj
  • that teaches applied arts, sciences, technology, engineering and other academic subjects 

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