A person's deep internal sense of being a man, woman, or another gender (e.g., non-binary, agender).
An umbrella term for gender identities that are not exclusively male or female. Important Distinctions
An umbrella term for people whose gender identity or expression differs from the sex they were assigned at birth.
Use "transgender" as an adjective, not a noun or verb (e.g., "a transgender person," not "a transgender" or "he is transgendered"). LGBTQ+ Culture and Community Cultural Competence in the Care of LGBTQ Patients - NCBI
How a person presents their gender outwardly (clothing, hair, behavior).
Gender identity is who you are ; sexual orientation is who you are attracted to . A trans person can be straight, lesbian, gay, or bisexual.
Someone whose gender identity matches the sex they were assigned at birth.
The process of taking steps to live in a person's true gender, which may include social (name, pronouns), legal (documents), or medical (hormones, surgery) changes. There is no "right" way to transition.