dotage vs elderliness

dotage

noun
  • Decline in judgment and other cognitive functions, associated with aging; senility. 

  • Fondness or attentiveness, especially to an excessive degree. 

  • Foolish utterance(s); drivel. 

elderliness

noun
  • The quality or state of being elderly 

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