hired gun vs roughie

hired gun

noun
  • A person who is employed as an armed guard, enforcer, or mercenary and who is prepared to use gunplay or similar violent methods in order to assert the interests of his or her employer. 

  • A person who is employed to advance the interests of his or her employer, especially in a vigorous manner using such methods as political lobbying, legal advocacy, or persuasion. 

roughie

noun
  • A film portraying rough sex. 

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