chaste vs hetero

chaste

adj
  • Abstaining from immoral or unlawful sexual intercourse. 

  • Decent, modest, morally pure. 

  • Virginal, innocent, having had no sexual experience. 

  • Austere, simple, undecorative. 

hetero

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

noun
  • A heterosexual person. 

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