cobwebbiness vs infirmity

cobwebbiness

noun
  • Oldness; datedness. 

  • The state of having many cobwebs. 

  • The quality of a resemblance to cobwebs. 

infirmity

noun
  • feebleness, frailty or ailment, especially due to old age. 

  • a moral weakness or defect 

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