ladyboy vs transsex

ladyboy

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

transsex

noun
  • Transsexuality, transsexualism; the state of being transsexual. (Compare transgender.) 

adj
  • Transsexual. 

verb
  • To transgender; to (cause something to) change from being sexed/gendered in one way to being sexed/gendered in another way. 

  • To transition (to undergo a transition) from being one sex/gender to being another (especially by sex reassignment surgery). (Compare transgender.) 

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