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kidney – n. either of two organs in your body that remove waste products from your blood and make urine
surgery – n. medical treatment in which a doctor cuts into someone's body in order to repair or remove damaged or diseased parts
chaplain – n. a religious leader who performs religious services for a military group (such as the army) or for a prison, hospital, etc.
badge – n. a small object (such as a tag, pin, or metal shield) that is worn or held up by a person so that it can be easily seen, that has writing (such as a person's name) and often a picture on it, and that shows who the person is
TB – n. abbreviation for tuberculosis, a serious disease that mainly affects the lungs
approximately – adj. close in value or amount but not precise
sneak – v. to move quietly and secretly in order to avoid being noticed
rewarding – adj. giving you a good feeling that you have done something valuable, important, etc.
