How about comparing men and women in human anatomy? Men, large skull, square hairline, big forehead, brow bone, high wide cheeks, far apart eyes that are set back in the skull. Low attached ears. Large philtrum (space between nose and mouth). Large square jaw, long tree trunk shaped neck, large larynx and Adams apple. Hey, ill just keep it to the face this time and expand later. Female, smaller skull, widdows peak, smaller forehead, close together and bulging rather than setback eyes, eyebrows close to eyes, high attached ears, chubby rosey cheeks, small lips with cupids bow, weak sloped jaw and double chin.