infant vs munchkin

infant

noun
  • A minor. 

  • A very young human being, from conception to somewhere between six months and two years of age after birth, needing almost constant care and attention. 

munchkin

noun
  • A child. 

  • A person of very short stature. 

  • A player who mainly concentrates on increasing their character's power and capabilities. 

  • Synonym of donut hole (“ball-shaped pastry”) (genericization of the Dunkin trademark "Munchkin") 

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