The term 'kind of accident' can be summarized by two crossword solutions: 'FREAK' and 'onecar'. A FREAK accident is an unexpected, unusual, or highly improbable event that is not caused by any human action. It is usually caused by natural forces such as weather or other environmental factors. A onecar accident is an accident involving only one vehicle. This type of accident is often caused by driver error, such as speeding, distracted driving, or impaired driving.