overtop vs overwin

overtop

verb
  • To be higher than; to rise over the top of. 

  • To place too many toppings on. 

adv
  • Over the top. 

overwin

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

noun
  • The win or winning of a game. 

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