psychotherapy vs therapy

psychotherapy

noun
  • The treatment of people diagnosed with mental and emotional disorders using dialogue and a variety of psychological techniques. 

therapy

noun
  • Specifically, psychotherapy. 

  • Healing power or quality. 

  • Attempted remediation of a health problem following a diagnosis, usually synonymous with treatment. 

verb
  • To treat with a therapy. 

  • To undergo a therapy. 

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