autist vs brooder

autist

noun
  • An autistic person, a person with autism. 

  • A person characterized by abnormal and unhealthy focus or persistence, low self-awareness and unhealthy hatred of opposition or criticism. 

brooder

noun
  • A heated box used for chicks or premature babies 

  • A person who broods 

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