gibberish vs idiot

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. 

idiot

adj
  • idiotic, stupid 

noun
  • A person who makes stupid decisions; a fool. 

  • A person of low general intelligence. 

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