heterosexualism vs plainness

heterosexualism

noun
  • Synonym of heterosexuality 

  • 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. 

plainness

noun
  • The condition of being plain (in all senses) 

  • The product or result of being plain 

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