lesbian vs pansexuality

lesbian

noun
  • A homosexual woman, one who is mostly or exclusively sexually or romantically attracted to other women. 

  • A homosexual female animal. 

verb
  • To (cause to) take part in lesbian sex, or other lesbian activity. 

adj
  • Intended for lesbians. 

  • Homosexual, gay; preferring mostly or exclusively women as romantic or sexual partners. 

  • Between two or more women; homosexual, gay. 

pansexuality

noun
  • Sexuality that encompasses all kinds of sexuality. 

  • A sexual orientation characterized by the potential for aesthetic attraction, romantic love and/or sexual desire for people regardless of their gender or sex. 

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