ladyboy vs transgender

ladyboy

noun
  • A trans woman or transfeminine person in or from Asia. 

transgender

noun
  • A transgender person. 

  • Transgenderism; the state of being transgender. (Compare transsex.) 

verb
  • To change the gender of; (used loosely) to change the sex of. (Compare transsex.) 

adj
  • Intended primarily for transgender people. 

  • Having a gender (identity) which is opposite from the sex one was assigned at birth: being assigned male at birth but having a female gender, or vice versa. 

  • Available for use by transgender people, rather than only non-transgender people. 

  • Having a gender (identity) which is different from the sex one was assigned at birth, or pertaining to a person who does. 

  • Crossgender. 

  • Transgressing or not identifying with culturally conventional gender roles and categories of male or female. 

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