gibberish vs hollow

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. 

hollow

adj
  • Without substance; having no real or significant worth; meaningless. 

  • Concave; gaunt; sunken. 

  • Insincere, devoid of validity; specious. 

  • Distant, eerie; echoing, reverberating, as if in a hollow space; dull, muffled; often low-pitched. 

  • Pertaining to hollow body position 

  • Having an empty space or cavity inside. 

adv
  • Completely, as part of the phrase beat hollow or beat all hollow. 

verb
  • To call or urge by shouting; to hollo. 

  • to make a hole in something; to excavate 

noun
  • A sunken area or unfilled space in something solid; a cavity, natural or artificial. 

  • A sunken area. 

  • A small valley between mountains. 

  • A feeling of emptiness. 

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