daily grind vs employment

daily grind

noun
  • The difficult, routine, or monotonous tasks of daily work. 

employment

noun
  • An activity to which one devotes time 

  • The act of employing 

  • The number or percentage of people at work 

  • The work or occupation for which one is used, and often paid 

  • A use, purpose 

  • The state of being employed 

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