Some substances are more toxic than others. The toxicity of a substance is described by the types of effects it causes and its potency. 1  Types of Effects: Different chemicals cause different effects.
I think I remember reading that injured means bruises and lascerations, seriously injured meant hospital but not life threatening, critically injured meant hospital ICU time and fatally injured meant injuries leading to dying sometime later.
Full Definition of TRAUMA. 1. a: an injury (as a wound) to living tissue caused by an extrinsic agent b: a disordered psychic or behavioral state resulting from severe mental or emotional stress or physical injury. 2.: an agent, force, or mechanism that causes trauma. â trauÂ·matÂ·ic \trÉ-Ëma-tik, troÌ-, trauÌ-\ adjective. She never fully recovered from the trauma of her experiences. 2  an accident victim with severe head trauma. 3  repeated trauma to a knee. 4  The accident victim sustained multiple traumas.