overwin vs pull off

overwin

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

noun
  • The win or winning of a game. 

pull off

verb
  • To achieve; to succeed at something difficult. 

  • To begin moving and then move away; to pull away. 

  • To masturbate. 

  • To remove by pulling. 

  • To turn off a road (onto the side of the road, or onto another road). 

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