dubious vs gibberish

dubious

adj
  • Generally considered imprecise or wrong, but not totally unplayable. 

  • Arousing doubt; questionable; open to suspicion. 

  • In disbelief; wavering, uncertain, or hesitating in opinion; inclined to doubt; undecided. 

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. 

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