DISORDER CIVIL is a term used to describe a situation in which civil unrest and violence occur due to a breakdown of law and order. RIOT is a term used to describe a situation in which a large group of people become violent and destructive, often resulting in property damage and injury. CHAOS is a term used to describe a state of complete confusion and disorder. ASTHMA is a medical condition characterized by difficulty breathing due to constriction of the airways. APNEA is a medical condition characterized by pauses in breathing during sleep.