Gross negligence is a much more serious form of carelessness than ordinary negligence, involving conduct that shows a complete disregard for the safety of others or an extreme departure from what a reasonable person would do. While regular negligence might be accidentally running a red light, gross negligence would be something like driving drunk at high speeds through a school zone - behavior that shows a reckless indifference to whether someone gets hurt. It's conduct that is so careless and dangerous that it goes far beyond a simple mistake or momentary lapse in judgment.
In personal injury cases, proving gross negligence is important because it can lead to much higher compensation, including punitive damages that are designed to punish the wrongdoer rather than just compensate the victim. Courts and juries view gross negligence much more seriously than ordinary accidents, and defendants who are found grossly negligent may face additional penalties beyond paying for medical bills and lost wages. For example, a company that knowingly sells a dangerous product without warnings despite being aware of serious safety risks could face punitive damages for gross negligence, sending a message that such reckless behavior won't be tolerated.