As to abuse of power, you are welcome to your interpretation. I look at it from an abstract viewpoint. I have read that sexual harassment is about power. I take a wider view than your narrow interpretation of the phrase. Power in all its forms can always be abused by the wielder.
I understand. In fact, I knew all that when I read your original words. Nevertheless, your comment referred to a statement I had made, where I used the term in question with the canonical semantics. It's not fair to criticize my statement based on an interpretation of the terms I use that differs from what was intended. That's my basic point.
Additionally, consider the following: Any crime, or wrongful act, can abstractly be viewed as an 'abuse of power,' using the level of abstraction you apparently prefer. That deprives the term of any additional meaning or utility beyond saying that someone did something wrong.