employ vs professional

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. 

professional

noun
  • A person who belongs to a profession 

  • A reputation known by name 

  • A prostitute 

  • An expert 

  • One of four categories of sociologist propounded by Horowitz: a sociologist who is actively concerned with promoting the profession of sociology. 

  • A person who earns their living from a specified activity 

adj
  • Expert. 

  • Of, pertaining to, or in accordance with the (usually high) standards of a profession. 

  • That is carried out for money, especially as a livelihood. 

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