These terms are normally interchangeable but there are some differences. There could be a difference regarding the degree and/or type of injury. As mentioned, bodily injuries normally require hospital stays. A personal injury could be a bump or scratch. Personal injuries are often just as serious as bodily injuries. For example, if a nursing home staffer pushes a resident, the resident could sustain a serious injury, since most residents have pre-existing physical conditions. Additionally, bodily injury usually refers to visible injuries. Invisible injuries, like Post Traumatic Stress Disorder, are every bit as severe.