dispute vs litigate

dispute

verb
  • to contend in argument; to argue against something maintained, upheld, or claimed, by another. 

  • to make a subject of disputation; to argue pro and con; to discuss 

  • to strive or contend about; to contest 

  • to oppose by argument or assertion; to controvert; to express dissent or opposition to; to call in question; to deny the truth or validity of 

noun
  • Verbal controversy or disagreement; altercation; debate. 

  • An argument or disagreement, a failure to agree. 

litigate

verb
  • To dispute; to fight over. 

  • To go to law; to carry on a lawsuit. 

  • To contest in law. 

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