cryptolect vs eye dialect

cryptolect

noun
  • A secretive language form used by a subculture; an arcane cant. 

eye dialect

noun
  • A set of such nonstandard spellings, collectively used to reflect a certain form of speech. 

  • Nonstandard spellings which, although they indicate a standard pronunciation, are deliberately substituted in place of the standard spellings, often to indicate that a speaker's regular use of language is nonstandard or dialectal. 

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