urgency vs weakness

urgency

noun
  • Insistence, pressure, urge. 

  • The quality or condition of being urgent. 

  • A sudden and compelling need to urinate that is difficult to defer, associated with conditions such as urinary tract infections and overactive bladder. 

weakness

noun
  • A special fondness or desire. 

  • An inadequate quality; fault 

  • The condition of being weak. 

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