cacography vs missive

cacography

noun
  • Poor or illegible handwriting. 

  • Bad spelling or punctuation, especially unintuitive spellings considered as a feature of a whole language or dialect. 

missive

noun
  • A written message; a letter, note or memo. 

  • Letters sent between two parties in which one makes an offer and the other accepts it. 

adj
  • Specially sent; intended or prepared to be sent. 

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