Gender identity is one's personal experience of one's own gender.
Gender is the range of characteristics pertaining to, and differentiating between, masculinity and femininity.
Experience is the knowledge or mastery of an event or subject gained through involvement in or exposure to it.
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Gender identity can correlate with assigned sex at birth, or can differ from it completely.
Organisms of many species are specialized into male and female varieties, each known as a sex, with some falling in between being intersex.
Sex assignment is the determination of an infant's sex at birth.
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All societies have a set of gender categories that can serve as the basis of the formation of a person's social identity in relation to other members of society.
A society is a group of people involved in persistent social interaction, or a large social grouping sharing the same geographical or social territory, typically subject to the same political authority and dominant cultural expectations.
In psychology, identity is the qualities, beliefs, personality, looks and/or expressions that make a person or group.
In most societies, there is a basic division between gender attributes assigned to males and females, a gender binary to which most people adhere and which enforces conformance to ideals of masculinity and femininity in all aspects of sex and gender: biological sex, gender identity, and gender expression.
The distinction between sex and gender differentiates sex from gender, which can refer to either social roles based on the sex of the person or personal identification of one's own gender based on an internal awareness.
The gender binary, also referred to as gender binarism, is the classification of sex and gender into two distinct, opposite and disconnected forms of masculine and feminine.
Masculinity is a set of attributes, behaviors and roles generally associated with boys and men.
In all societies, some individuals do not identify with some of the aspects of gender that are assigned to their biological sex; some of those individuals are transgender or genderqueer.
Genderqueer, also termed non-binary, is a catch-all category for gender identities that are not exclusively masculine or feminine—identities which are thus outside of the gender binary and cisnormativity.
Transgender people are people who have a gender identity, or gender expression, that differs from their assigned sex.
Some societies have third gender categories.
Third gender or third sex is a concept in which individuals are categorized, either by themselves or by society, as neither man nor woman.
After age three, it is extremely difficult to change, and attempts to reassign it can result in gender dysphoria.
Gender dysphoria or gender identity disorder is the dysphoria a person experiences as a result of the sex and gender they were assigned at birth.
Dysphoria is a profound state of unease or dissatisfaction.