gobbledygook vs taciturnity

gobbledygook

noun
  • Nonsense; meaningless or encrypted language. 

  • Something written in an overly complex, incoherent, or incomprehensible manner. 

taciturnity

noun
  • The trait of being taciturn. 

  • Failure to assert a legal right in a way that implies that it is being given up. 

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