juvenile vs sexually mature

juvenile

adj
  • Young; not fully developed. 

  • Characteristic of youth or immaturity; childish. 

noun
  • A person younger than the age of full criminal responsibility, such that the person either cannot be held criminally liable or is subject to less severe forms of punishment. 

  • A sexually immature animal. 

  • A prepubescent child. 

  • A publication for young adult readers. 

  • A two-year-old racehorse. 

  • A person younger than the age of majority; a minor. 

  • An actor playing a child's role. 

sexually mature

adj
  • Having reached the age or stage of being able to reproduce. 

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