What does it mean to be a man or a woman?

I believe the biological factor is how we distinguish between man and women. Not only are there differences in sex, men are portrayed stronger physically where as women are seen as the weaker gender. Other than that, gender ideology also comes in to be a factor because it refers to appropriate roles, rights, and responsibilities of women and men in the society. Although in our society men and women have become more equal, these stereotypical roles of men and women still define each gender.