junior vs tweenie

junior

noun
  • A younger person. 

  • A junior barrister. 

  • A third-year student at a high school or university. 

  • A name suffix used after a son's name when his father has the same name (abbreviations: Jnr., Jr., Jun.). 

adj
  • Belonging to a younger person, or an earlier time of life. 

  • Low in rank; having a subordinate role, job, or situation. 

  • Younger. 

  • Of or pertaining to a third academic year in a four-year high school (eleventh grade) or university. 

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 junior and tweenie occurred in a corpus of books? (source: Google Ngram Viewer )