tranny vs trans girl

tranny

noun
  • A transsexual, transgender, or transvestite person, usually a trans woman. 

  • A mechanical transmission, a gearbox. 

  • A transistor radio. 

  • A transformer. 

  • A transition between moves. 

trans girl

noun
  • A transgender girl. 

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