heterosexual vs sexual

heterosexual

adj
  • Sexually attracted to members of the opposite sex. 

noun
  • A heterosexual person, or other heterosexual organism. 

sexual

adj
  • Experiencing sexual attraction; not asexual. 

  • Pertaining to sexuality as a cultural phenomenon; relating to sexual behaviour or conduct. 

  • Capable of sexual reproduction; sexed, sexuate. 

  • Pertaining to sexual intercourse or other intimate physical contact. 

  • Characterised by sexual feelings or behaviour; possessing sexuality. 

  • Arising from the fact of being male or female; pertaining to sex or gender, or to the social relations between the sexes. 

noun
  • A species which reproduces by sexual rather than asexual reproduction, or a member of such a species. 

  • A person who experiences sexual attraction, a person who has interest in or desire for sex (especially as contrasted with an asexual). 

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