bisexuality vs same-sexness

bisexuality

noun
  • The state of being sexually or romantically attracted to members of either sex or gender. 

  • The state of being bisexual (“having both male and female parts or roles”). 

same-sexness

noun
  • The condition of having or being of the same sex. 

  • Homosexuality. 

How often have the words bisexuality and same-sexness occurred in a corpus of books? (source: Google Ngram Viewer )