schooldays vs teen

schooldays

noun
  • The period of one's life when one attends school, particularly, primary school (as opposed to college days); one's youth. 

teen

noun
  • Synonym of teenager: a person between 13 and 19 years old. 

  • Vexation; anger; hate. 

adj
  • Of or having to do with teenagers; teenage 

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