convalescent vs out of the woods

convalescent

noun
  • A person recovering from illness. 

adj
  • of convalescence or convalescents 

  • recovering one's health and strength after a period of illness 

out of the woods

prep
  • Out of peril; likely to recover or prevail over trouble; finished with the worst or most threatening part of a problem or illness. 

  • Used other than figuratively or idiomatically: see out of, the, woods. 

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