besom vs grater

besom

noun
  • Any cleansing or purifying agent. 

  • A broom made from a bundle of twigs tied onto a shaft. 

  • A troublesome woman. 

grater

noun
  • a tool with which one grates, especially foods such as cheese, to facilitate getting small particles or shreds off a solid lump 

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