hermaphrodism vs unisexual

hermaphrodism

noun
  • A congenital condition in which an organism possesses the reproductive organs of both sexes. 

unisexual

noun
  • An organism which is unisexual. 

adj
  • Of an organism, having characteristics of a single sex (as opposed to hermaphrodites). 

  • Of a species, having only a single (potentially hermaphroditic) sex (as opposed to bisexual). 

  • Unisex; suitable for any sex or gender. 

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