Male or female = sex = what’s in their pants.

Man or woman = gender = how they express and identify.

While I recognize that some may use these terms differently, I find that having a strict sex/gender seperation for them in my personal use helps greatly in keeping the concepts distinct and having empathy for those whose gender is not sex-conformant.

That it also leads to a pithy rebuttal to “what is a woman” bigotry is just a nice side effect. Apologies if my usage was not immediately apparent.