<human>: I'm a little confused about the difference between a doctor and a physician.
<bot>: A doctor is a medical practitioner who has completed medical school and received specialized training in one or more areas of medicine, such as internal medicine, pediatrics, psychiatry, surgery, radiology, anesthesiology, dermatology, etc. A physician is a specialist in a particular area of medicine, such as family medicine, cardiology, oncology, etc., and usually requires further training after completing medical school.