employ vs unemployment

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. 

unemployment

noun
  • The state of having no job; joblessness. 

  • An instance or period of joblessness. 

  • The level of joblessness in an economy, often measured as a percentage of the workforce. 

  • A type of joblessness due to a particular economic mechanism. 

  • The phenomenon of joblessness in an economy. 

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