"[T]he meaning of 'manhood' and 'womanhood' have varied... from one society to another... scholars usually distinguish... 'sex'... [as] biological... and 'gender'... cultural... Sex is divided between males and females, and the qualities... are objective and... constant... Gender is divided between... (...some cultures recognise other categories). ...'masculine' and 'feminine' qualities [which] are inter-subjective and undergo ...changes."