pubescent vs younghead

pubescent

noun
  • An individual who is going through puberty. 

  • Synonym: See Thesaurus:pubescent 

adj
  • At or just after the age of puberty. 

  • Covered with down or fine hairs. 

younghead

noun
  • A young person; a teenager. 

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