Final answer:
Cancer is a group of diseases involving abnormal cell growth. It is not derived from the Greek word for death. Cancer occurs when the cell cycle is no longer regulated due to DNA damage, leading to uncontrolled cell division.
Step-by-step explanation:
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. It is not derived from the Greek word for death. Cancer occurs when the cell cycle is no longer regulated due to DNA damage, leading to uncontrolled cell division. The causes of cancer are both genetic and environmental factors. Some risk factors for cancer include smoking, exposure to UV radiation, and certain genetic mutations. Cancer can be a deadly disease, but advancements in research and treatment have improved survival rates.