Machiavellian vs dog eat dog

Machiavellian

adj
  • Attempting to achieve goals by cunning, scheming, and unscrupulous methods, especially in politics or in advancing one's career. 

  • Related to the philosophical system of Niccolò Machiavelli. 

noun
  • A ruthless schemer. 

dog eat dog

adj
  • Ruthlessly acquisitive or competitive. Describes a business or other set of circumstances where people try to succeed at the expense of other people. 

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