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.
trauma in Medicine. trauma trauÂ·ma (trÃ´'mÉ, trou'-) n. pl. trauÂ·mas or trauÂ·maÂ·ta (-mÉ-tÉ) A serious bodily injury or shock, as from violence or an accident. An emotional wound or shock that creates substantial lasting damage to one's psychological development, often leading to neurosis.