Colloquially, accidents are random events without intention or fault.

That's why there's a push to use neutral terms like "crash" that don't imply that the "accident" was just a random accidental mistake.

And fault is often a bit of a misnomer. Many crashes are the result of bad design, but the courts would never say "this pedestrian fatality here is 40% the fault of whichever insane engineer put the library parking lot across a 4-lane road from the library but refused to put a crosswalk there or implement any sort of traffic calming because that would inconvenience drivers".