catamite vs mandem

catamite

noun
  • A boy or younger man in a homoerotic relationship with an older man. 

verb
  • To engage in a homoerotic relationship involving a boy and an older man. 

mandem

noun
  • group of men or boys; male friends 

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