prepubescent vs tweenie

prepubescent

noun
  • A person who has not begun puberty. 

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

tweenie

noun
  • A child who is not quite old enough to be a teenager; a tweenager. 

  • A shot that is hit between the legs; a tweener. 

  • A 650-watt fresnel motion picture lighting instrument first manufactured by the Mole-Richardson Company. 

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