prep school vs seminary

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. 

seminary

noun
  • A private residential school for girls. 

  • A piece of ground where seed is sown for producing plants for transplantation. 

  • The place or original stock from which anything is brought or produced. 

  • A class of religious education for youths ages 14–18 that accompanies normal secular education. 

  • A theological school for the training of rabbis, priests, or ministers. 

  • A Roman Catholic priest educated in a foreign seminary; a seminarist. 

adj
  • Of or relating to seed; seminal. 

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