Sex
Definition 1 of 4
Pro Tip 1/3
Not Gender
Sex refers to biological differences, while 'gender' includes social and cultural roles. Her sex is female, but she identifies with a different gender.
Pro Tip 2/3
Non-binary Awareness
Some people don't identify with traditional male or female sexes; be aware of non-binary or others. Alex's sex is male, but they are non-binary.
Pro Tip 3/3
Sensitive Subject
Asking someone about their sex can be invasive; it's usually private information. A medical form might ask for your sex for health reasons.