juvenile vs moorhen

juvenile

noun
  • A sexually immature animal. 

  • 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 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. 

adj
  • Characteristic of youth or immaturity; childish. 

  • Young; not fully developed. 

moorhen

noun
  • A female red grouse, Lagopus lagopus scotica. 

  • Any of various medium-sized water birds of the genus Gallinula, of the rail family, that feed in open water margins. 

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