juniority vs puerility

juniority

noun
  • The quality or state of being junior. 

puerility

noun
  • The state, quality, or condition of being childish or puerile. 

  • That which is puerile or childish; especially, an expression which is insipid or silly. 

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