assist vs tip over

assist

noun
  • A decisive pass made to the goal scorer 

  • A helpful action or an act of giving. 

  • A defensive play, allowing a teammate to record a putout. 

verb
  • To help. 

  • To make a pass that leads directly towards scoring. 

  • To help compensate for what is missing with the help of a medical technique or therapy. 

tip over

noun
  • An action where the goalkeeper deflects the ball over the crossbar. 

verb
  • (to cause) to topple over and fall 

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