employ vs unauthorize

employ

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

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

  • To make busy. 

noun
  • The state of being an employee; employment. 

unauthorize

verb
  • To disown the authority of; to repudiate. 

  • To withdraw authorization or permissions from. 

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