employ vs métier

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. 

métier

noun
  • Any activity that is pursued as a trade or profession; a calling. 

  • An activity to which a person is particularly suited. 

  • An outstanding or beneficial feature. 

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