lingam vs magnum

lingam

noun
  • The penis. 

  • The aniconic phallic representation traditionally worshipped as a symbol of or in connection with Shiva. 

magnum

noun
  • A powerful firearm cartridge, often derived from a shorter, less powerful cartridge calibre that uses the same bullet. 

  • A bottle containing 1.5 liters of fluid, double the volume of a standard wine bottle. 

  • A handgun that fires a cartridge of this calibre; chiefly a revolver, but rarely an autoloader firing an unusually powerful calibre. 

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