bisexuality vs eroticism

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”). 

eroticism

noun
  • the state of being erotic, or of being sexually aroused 

  • sexual excitement, especially if abnormally persistent 

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