hetero vs heterosexuality

hetero

noun

  • A heterosexual person. 

adj

  • Heterosexual: of, pertaining to, or being a heterosexual person. 

heterosexuality

noun

  • Sexual activity with a person of the opposite sex. 

  • The state of being sexually and romantically attracted primarily or exclusively to persons of the opposite sex. 

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