dry spell vs penury

dry spell

noun
  • A period or time where there is little activity, productivity, low income etc. 

  • A drawn-out period where the weather has been dry, for an abnormally long time; shorter and not as severe as a drought. 

  • A period of time without sexual intercourse. 

penury

noun
  • Extreme want; poverty; destitution. 

  • A lack of something; a dearth. 

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