fight off vs overwin

fight off

verb
  • To succeed in defeating a challenge, or an attack. 

  • To resist, particularly an infection or an emotion. 

overwin

verb
  • To overcome; gain one's point; exceed. 

noun
  • The win or winning of a game. 

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