hooking vs rough trade

hooking

noun
  • The penalized action of using one's stick to restrain an opponent. 

  • The act of catching or fastening something on a hook. 

rough trade

noun
  • Rough or tough men, either gay or straight, who are available as casual sexual partners for other men (for example in exchange for money). 

  • Violent or sadomasochistic sex, especially casual gay sex. 

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