Major disasters are events that cause significant damage or loss of life. Two words that can be used to describe major disasters are FIASCOS and trainwrecks. A fiasco is a complete failure, usually due to a lack of foresight or planning. A trainwreck is an event that causes great destruction or loss of life, often due to negligence or incompetence. Both terms can be used to describe major disasters, such as natural disasters, industrial accidents, or other catastrophic events.