Ganymede vs male homosexual

Ganymede

name
  • A Trojan boy who was abducted (either by Zeus or Eos), and ultimately became immortal in order to be Zeus' cupbearer. 

  • A moon of Jupiter. 

noun
  • A servant boy or young waiter, particularly one who serves liquor. 

  • A boy kept for pederastic purposes; a catamite. 

male homosexual

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