convalescence vs healing

convalescence

noun
  • The period of time spent healing. 

  • A gradual healing after illness or injury. 

healing

noun
  • An act of healing, as by a faith healer. 

  • The process where the cells in the body regenerate and repair themselves. 

  • The psychological process of dealing with a problem or problems. 

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