dotage vs golden years

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. 

golden years

noun
  • Old age; especially, the leisure years in later life after one has retired from employment. 

  • The period during which someone or something flourishes. 

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