classism vs heterosexualism

classism

noun
  • Discrimination or prejudice that is based on social class, especially against those of lower social class. 

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 classism and heterosexualism occurred in a corpus of books? (source: Google Ngram Viewer )