I'll make it simple for you Toaster.
KAL007 shoot down was a deliberate act since the interceptor pilot could see a B747 in civilian markings with running and cabin lights on. How he could fail to see the jet was full of people is not known. Maybe the Russians just didn't care. In a legal sense it was cold blooded murder.
The Iran Air 655 shoot down was an accident and the cruiser crew thought they were shooting at an F-14 not an A300. A lot of stupidity happened during this incident but it can only be considered manslaughter.