gibberish vs parlour game

gibberish

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. 

adj
  • unintelligible, incoherent or meaningless 

parlour game

noun
  • The use of deliberately nebulous or confusing language. 

  • Any of a number of amusing games played indoors with few props by the members of a social gathering. 

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