gobbledygook vs subdialect

gobbledygook

noun
  • Nonsense; meaningless or encrypted language. 

  • Something written in an overly complex, incoherent, or incomprehensible manner. 

subdialect

noun
  • A subdivision of a dialect 

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