employ vs lawman

employ

noun
  • The state of being an employee; employment. 

verb
  • To hire (somebody for work or a job). 

  • To use (somebody for a job, or something for a task). 

  • To make busy. 

lawman

noun
  • An officer of the law: a law-enforcement officer. 

  • A lawspeaker: a declarer of the law. 

  • The presiding justice of the supreme court. 

  • A man of the law: a lawyer. 

  • One of 12 magistrates in certain Danish boroughs of England empowered with soc and sac over their own households. 

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