Coach Mi Definition:
Explanation – A reason for why something happened. A process to help the listener understand.
Excuse – An attempt at an explanation, but with the aim of absolving self or others from responsibility.
Do you offer explanations or excuses? To the listener, an excuse usually has a hollowness to it, a lack of believability. So if you’re not sure whether you are giving an explanation or an excuse, put yourself in the shoes of a listener.
By all means explain, but do take responsibility!