I find the English language on the subject to be really confusing.

Male and Female are supposed to be biological definitions, but they are used interchangeably with gender. When someone says Assigned Male at Birth, they mean gender, not sex. It is society telling you that because you're male, you're a boy, not that society is telling you that you're male or female, you are, unless you're intersex, male or female.

When someone undergoes surgery, they call it gender reassignment surgery, but it would be more akin to changing sex, rather than gender. Gender is psychological, it's an identity, you can't change gender via surgery.

In Hebrew we don't really have this issue, because the words for male and female are a lot more clinical, and used almost exclusively on forms, and not every day speech.

For example, the equivalent to the word feminine is not derived from female, but rather from the word woman.

This allows a much sharper split between sex and gender. I'm not entirely sure why it is the way it is in English, but it is very confusing to me.