straighten vs tip over

straighten

verb
  • To bribe or corrupt. 

  • To clarify a situation or concept to (an audience). 

  • To stand up, especially from a sitting position. 

  • To cause to become straight. 

  • To become straight. 

  • To put in order; to sort; to tidy up. 

tip over

verb
  • (to cause) to topple over and fall 

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

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