gramma vs nan

gramma

noun
  • Something that is written. 

  • The subjects of reading, writing, and arithmetic. 

  • A variety of pumpkin, a cultivar of Cucurbita moschata. 

nan

noun
  • Synonym of grandmother. 

  • Synonym of nursemaid. 

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