teen vs youngness

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 

youngness

noun
  • The state or qualities of being young or youthful; youth. 

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