Help:Gender

There are Sexless people and 5 sexes (Male, Female, Masculine Hermaphrodite, Feminine Hermaphrodite, True Hermaphrodite)

But the gender is social statuses for person regardless of their actual sex

Note: Transsexuals are actually sexless, Unless they transformed by transplant or supernatural circumstances

Note2: The person who born as sexless is also true hermaphrodite, that not limited to male and female mix

The List
Actually even sexes, age stages, social classes, and sexualities are genders too But mainly gender focus on mental sex:
 * Agendered (person who felt that they neither male or female)
 * Cis or Cisgendered (the person who their mental gender identical to their biological sex, Male: Cismale, Cisman, Cisguy, or Cisboy, Female: Cisfemale, Ciswoman or Cisgirl)
 * Bi, Bi-gendered, or Bigendered (the people who feel like they both females and males especially who are not hermaphrodite)
 * Trans, Transgendered, or Gender-transitioner (the person who born with sex and identify with opposite sex, Female: Transboy, Transman, Transguy, Transmale, Tomboy, and FtM (Female transitioning to Male), and Reverse Trap Male; Transgirl, Transwoman, Transfemale, Tomgirl, MtF (Male transitioning to Female), and Trap)

for more information see:
 * the Complete List of Genders
 * Gender Identities