blender vs cauldron

blender

noun
  • A machine with sharp rotating blades in a bowl, for mashing, crushing, or liquefying food ingredients. 

  • A piece of fabric sewn into the front of a theatrical wig to make it blend in with the performer's natural hair. 

  • A subtly patterned fabric printed in different shades of a single color, often used in place of a solid to create visual texture. 

cauldron

noun
  • A large bowl-shaped pot used for boiling over an open flame. 

  • A strategic encirclement. 

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