convenience vs employ

convenience

verb
  • To make convenient 

noun
  • Any object that makes life more convenient; a helpful item. 

  • The quality of being convenient. 

  • A convenient time. 

employ

verb
  • To make busy. 

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

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

noun
  • The state of being an employee; employment. 

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