ladyboy vs transgendered

ladyboy

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

transgendered

noun
  • A transgender person. 

adj
  • Transgender; denoting or relating to a person whose gender identity does not correspond with their sex assigned at birth. 

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