apartheid vs heterosexualism

apartheid

noun
  • Any similar policy of racial separation/segregation and discrimination. 

  • A policy or situation of segregation based on some specified attribute. 

  • The policy of racial separation used by South Africa from 1948 to 1990. 

verb
  • To impose a policy of segregation of groups of people, especially one based on race. 

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