capsize vs topple over

capsize

verb
  • To overturn. 

  • To deform under stress. 

  • To cause (a ship) to overturn. 

noun
  • The act of, or occurrence of capsizing or overturning. 

topple over

verb
  • To fall over (to fall from an upright or standing position to a horizontal or prone position). 

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