hermaphroditism vs heterosexuality

hermaphroditism

noun
  • The state of having sexual organs of both the male and female sexes. 

heterosexuality

noun
  • Sexual activity with a person of the opposite sex. 

  • The state of being sexually and romantically attracted primarily or exclusively to persons of the opposite sex. 

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