non-binary can be defined as "does not subscribe to the gender binary but identifies with neither, both, or beyond male and female". The term may be used as "an umbrella term, encompassing several gender identities, including intergender, agender, xenogender, genderfluid, and demigender." Some non-binary identities are inclusive, because two or more genders are referenced, such as androgyne/androgynous, intergender, bigender, trigender, polygender, and pangender. Some non-binary identities are exclusive, because no gender is referenced, such as agender, genderless, neutrois, and xenogender.
Xenogender can be defined as a gender identity that references "ideas and identities outside of gender". This may include descriptions of gender identity in terms of "their first name or as a real or imaginary animal" or "texture, size, shape, light, sound, or other sensory characteristics".
