spec vs tip over

spec

noun
  • A spectacular mark (catch) in Australian rules football. 

verb
  • To specify, especially in a formal specification document. 

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 spec and tip over occurred in a corpus of books? (source: Google Ngram Viewer )