litotes vs parable

litotes

noun
  • An ironic figure of speech whereby something is stated by denying its opposite, particularly the negation of a negative quality to say something positive. 

parable

noun
  • A short narrative illustrating a lesson (usually religious/moral) by comparison or analogy. 

verb
  • To represent by parable. 

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