heterosexism vs heterosexualism

heterosexism

noun
  • Discrimination or prejudice in favor of heterosexuals. 

  • The assumption made when relating to others that everyone is heterosexual. 

heterosexualism

noun
  • Discrimination against non-heterosexual people on the basis of their sexual orientation. 

  • The state or existence of heterosexuality, including the traditional gender roles that accompany it. 

  • Synonym of heterosexuality 

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