Environmental - An event that causes harm to an environmental aspect, e.g., air, water, land, wildlife, habitat. This includes both natural (e.g. flooding) and man-made causes (e.g. chemical spills).

Social - Involves inappropriate human behavior. (e.g. fighting, bullying)

Health & Safety - Incidents that cause injury or ill health. 

Property Damage - Harm to real or personal property that occurred due to natural forces or someone's act or omission. (e.g. motorbike damage, machinery damage, damage to a structure)

Near Miss - Unplanned event that had potential to cause but luckily did not cause an injury, damage or other loss. Also called a close call.