What's gender identity?

Gail, 6 months ago

I remember the days when the world had two genders, male or female. Times have obviously changed since then and most websites allow you to set your gender as 'Other'. I've also seen 'Non-Binary' as an option on many websites (including Mooother).

Society finally seems to be accepting true diversity and people seem more accepting of various different gender identities. As part of the LGBTQIA community myself, this makes me happy, even though we still have a long way to go.

What exactly is a gender identity and why do we use the word 'identity' following the word gender? I'm slightly confused by it. Why don't we just ask someone's gender?