The term ‘gender identity’ refers to the inner knowledge and/or feeling of being a woman, a man, non-binary, trans, intersex, between, beyond or outside genders, and so on.
A person’s gender identity is not determined by their body. Cis people often assume that these categories automatically correspond and that e.g. a person with a body that the people around them read as “masculine” is a man. However, this is not always the case.
In June 2011, the UN Human Rights Council adopted a resolution calling for an end of the discrimination and persecution committed against individuals based on their gender identity.