moke vs sumpter

moke

noun
  • A donkey. 

  • A stupid person; a dolt. 

  • British small utility vehicle (styled "MOKE"). 

sumpter

noun
  • A packhorse; a beast of burden. 

  • The driver of a packhorse. 

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