If you frequently spit-up blood you should call an ambulance or have a nearby physician make a house call.

Physicians are usually distinguished from surgeons.

Rejecting the urging of his physician father to study medicine, Hawking chose instead to concentrate on mathematics and physics.

The doctor did everything possible as a physician to save the life of the dying child; he also gave his blood to help the child weather the storm.

You should ask a physician for his advice before taking this medicine.