roger vs sexual activity

roger

noun
  • An act of sexual intercourse. 

verb
  • Of a man, to have sexual intercourse with (someone), especially in a rough manner. 

  • To have sexual intercourse. 

  • To acknowledge by saying "roger". 

intj
  • Received (used in radio communications to acknowledge that a message has been received and understood) 

sexual activity

noun
  • any sexual activity that involves bodily contact 

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