impoverished vs used up

impoverished

adj
  • Having lost a component, an ingredient, or a faculty or a feature; rendered poor in something; depleted. 

  • Reduced to poverty. 

used up

adj
  • Worn out; depleted; exhausted; having nothing left; useless, due to the expenditure of all resources. 

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