employ vs engross

employ

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

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

  • To make busy. 

noun
  • The state of being an employee; employment. 

engross

verb
  • To monopolize; to concentrate (something) in the single possession of someone, especially unfairly. 

  • To write (a document) in large, aesthetic, and legible lettering; to make a finalized copy of. 

  • To completely engage the attention of. 

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