<human>: What is the difference between a nephrologist and a urologist?
<bot>: A nephrologist is a specialist in kidney diseases, while a urologist is a specialist in urinary tract disorders. Nephrologists are doctors who specialize in diagnosing and treating problems related to the kidneys and the blood vessels that supply them, while urologists focus on the urinary system, including the kidneys, bladder, and male reproductive organs.