elderly vs not as young as one used to be

elderly

noun
  • An elderly person. 

  • Older people as a whole. 

adj
  • old; having lived for relatively many years. 

  • Of an object, being old-fashioned or frail due to aging. 

not as young as one used to be

How often have the words elderly and not as young as one used to be occurred in a corpus of books? (source: Google Ngram Viewer )