“Be careful that you're not seeing [someone] as the gender you thought they were and just changing the pronouns. They're not a woman with they/them pronouns, they're a nonbinary person with they/them pronouns.”
Nonbinary
Here Charlotte talks about their experience of being a non-binary person and the impact of prejudice on their life.
A non-binary person is someone who does not identify as exclusively a man or a woman. Someone who is non-binary might feel like a mix of genders, or like they have no gender at all.
Here are some useful links to learn more about nonbinary people:
https://www.stonewall.org.uk/about-us/news/10-ways-step-ally-non-binary-people
https://www.glsen.org/activity/pronouns-guide-glsen