prepubescent vs youth

prepubescent

noun
  • A person who has not begun puberty. 

adj
  • Before the age at which a person begins puberty. 

youth

noun
  • A young person. 

  • A young man; a male adolescent or young adult. 

  • The quality or state of being young. 

  • The part of life following childhood; the period of existence preceding maturity or age; the whole early part of life, from childhood, or, sometimes, from infancy, to adulthood. 

  • Young persons, collectively. 

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