haggard vs worn down

haggard

noun
  • A hunting bird captured as an adult. 

  • A young or untrained hawk or falcon. 

  • A stackyard, an enclosure on a farm for stacking grain, hay, etc. 

adj
  • Looking exhausted, worried, or poor in condition 

  • Wild or untamed 

worn down

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