Gender Identity Support
Gender Identity is the sense
of ones own gender. For most people, this will match between the biological sex you are born and society's understanding of you as male or female. But for some people, their sense of who they are differs from the biological sex and they are sure they match society's understanding of the other gender to themselves, and this is a conviction in the core of the person (according to every understanding of the emotional core of a person) - if so, that is being transgender.
Gender can also be understood as a spectrum because society's understanding is not entirely fixed - clothing and other things that often differ between men and women, can still vary. There are certain "rough assumptions" but always variation and exceptions, so people might feel more at ease expressing aspects of either gender. Some people also do not feel they identify to either male or female.
Some people are also born with anatomical differences to either biological sex, or characteristics of both, and that is called 'intersex' - which is a sex identity, rather than a gender identity
(an intersex person could feel they are either male or female or neither.).
Useful resources on the web: Click pictures to open in a new tab.