reformatory vs therapeutic

reformatory

adj
  • Of, pertaining to, or conducive to reform; reformative. 

noun
  • A prison, especially one for juveniles; a reform school. 

therapeutic

adj
  • Of, or relating to therapy. 

  • Having a positive effect on the body or mind. 

noun
  • A therapeutic agent 

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