boarding school vs military school

boarding school

noun
  • A school which provides board and lodging as well as tuition, with students going home at weekends or between terms. 

  • A boarding school in which a dominant or colonial culture whitewashes a subordinate one de-culturizing the students of their native language, customs, religion, and culture. 

military school

noun
  • A secondary school (or middle school) that prepares its students for joining the military. 

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