convalescence vs malady

convalescence

noun
  • A gradual healing after illness or injury. 

  • The period of time spent healing. 

malady

noun
  • Any ailment or disease of the body; especially, a lingering or deep-seated disorder. 

  • A moral or mental defect or disorder. 

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