dastard vs toad

dastard

noun
  • A malicious coward; a dishonorable sneak. 

verb
  • To dastardize. 

adj
  • Meanly shrinking from danger, cowardly, dastardly. 

toad

noun
  • A contemptible or unpleasant person. 

  • An ugly person. 

  • An amphibian, a kind of frog (order Anura) with shorter hindlegs and a drier, wartier skin, many in family Bufonidae. 

verb
  • To expel (a user) permanently from a MUD or similar system, so that their account is deleted. 

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