homosexualism vs pansexuality

homosexualism

noun
  • A purported ideology behind (and promoting) homosexuality; gayness viewed as an ideology rather than a sexual orientation. 

pansexuality

noun
  • Sexuality that encompasses all kinds of sexuality. 

  • A sexual orientation characterized by the potential for aesthetic attraction, romantic love and/or sexual desire for people regardless of their gender or sex. 

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