fornication vs sexual orientation

fornication

noun
  • Sexual intercourse in general; sex. 

  • Sexual intercourse by people who are not married to each other, or which is considered illicit in another way. 

sexual orientation

noun
  • One's tendencies of sexual attraction, considered as a whole. 

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