success vs tug of war

success

noun
  • The achievement of one's aim or goal. 

  • Financial profitability. 

  • One who, or that which, achieves assumed goals. 

  • The fact of getting or achieving wealth, respect, or fame. 

tug of war

noun
  • A game or competition in which two teams pull or tug on opposite ends of a rope trying to force the other team over the line which initially marked the middle between the two teams. 

  • A dispute between two parties, particularly an entrenched, back-and-forth dispute. 

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