gibberish vs pleonastic

gibberish

adj
  • unintelligible, incoherent or meaningless 

noun
  • Needlessly obscure or overly technical language. 

  • Speech or writing that is unintelligible, incoherent or meaningless. 

  • A language game, comparable to pig Latin, in which one inserts a nonsense syllable before the first vowel in each syllable of a word. 

pleonastic

adj
  • Characterised by the use of redundant words or an excessive number of words. 

  • Redundant. 

  • Of, or relating to pleonasm. 

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