eversion vs extroversion

eversion

noun
  • The state of being turned inside out. 

  • An act of turning inside out. 

  • The condition of being turned outward. 

extroversion

noun
  • The condition of being inside out, especially in relation to the bladder. 

  • A personality orientation towards others and things outside oneself; behavior expressing such orientation. 

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