Psychiatry is a medical science focused on diagnostic, treatment, and prevention of mental, behavioral, and emotional disorders. A psychiatrist is a trained medical doctor who can prescribe medication, and they spend time managing the patient with prescription and course of treatment.
Psychology is a science to study the mind and behavior. Psychology has many sub-focus areas such as human development, health, social, sports, and cognitive processes. Psychologists focus only on psychotherapy and treating emotional and mental suffering. Psychologists are also qualified to conduct psychological testing, which is essential in assessing a person's mental state and determining the most effective treatment course behavior.