even the score vs revenge

even the score

verb
  • To get revenge against someone. 

revenge

verb
  • To take one's revenge (on or upon someone). 

  • To take revenge for (a particular harmful action) or on behalf of (its victim); to avenge. 

noun
  • A win by a previous loser. 

  • Any form of personal, retaliatory action against an individual, institution, or group for some alleged or perceived harm or injustice. 

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