moke vs wild horse

moke

noun
  • A donkey. 

  • A stupid person; a dolt. 

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

wild horse

noun
  • A feral horse. 

  • An untamed horse. 

  • A member of the species Equus ferus, sometimes excluding the domesticated horse. 

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