elderly vs teenage

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. 

teenage

adj
  • Of or relating to an age between thirteen and nineteen years old. 

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