brooder vs extrovert

brooder

noun
  • A heated box used for chicks or premature babies 

  • A person who broods 

extrovert

noun
  • An extroverted person: one who is outgoing, sociable, and concerned with outer affairs. 

verb
  • To turn or thrust outwards. 

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