1. Radiation targets only the cancer cells. However, chemotherapy is administered through the blood and therefore, affects both cancerous and non-cancerous cells
2. Though they can be used for any sort of cancer, radiation mainly targets solid tumours like those of the cervix, spine and skin.
3. Chemotherapy treats cancers through medicines, while radiation deals with cancer cells through rays
4. Radiation results in additional side effects like internal inflammation, especially in the stomach and the intestine.