The document defines common medical terms like disease, fever, allergy, gastritis, bruise, fracture, tonsillitis, otitis, laryngitis, and pharyngitis. Disease is described as the bad operation of the alive body. Fever is an excessive increase of temperature inside the body caused by disease. Allergy is an unusual reaction to particular substances or foods. Gastritis is an inflammation of the stomach lining. A bruise is discoloration of the skin that is not a fracture. A fracture is a broken bone. Tonsillitis is an inflammation of the tonsils. Otitis is an inflammation of the ear. Laryngitis is an inflammation of the lary