Black blue marks, also known as bruises, can be caused by different factors such as injuries, accidents, or medical conditions. There are a variety of synonyms for this type of discoloration, including contusion, ecchymosis, hematoma, and black eye. A contusion typically refers to a bruise caused by a physical impact, while ecchymosis can describe any skin discoloration resulting from bleeding beneath the surface. Hematomas are more severe bruises that involve larger amounts of blood collecting under the skin, while a black eye specifically refers to bruising around the eye caused by trauma. Whatever the cause or name, black blue marks can be painful and uncomfortable, but they will typically heal on their own over time.