preadolescent vs teen

preadolescent

noun
  • A child who has not yet reached puberty. 

adj
  • Of or relating to preadolescence. 

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 preadolescent and teen occurred in a corpus of books? (source: Google Ngram Viewer )