Gender is a social and cultural concept concerning the meanings, expectations, identities, roles and relationships associated with sex and with ideas about masculinity, femininity and other gender positions. In contemporary social science, gender is generally distinguished from biological sex, although the two concepts interact. Sex commonly refers to biological characteristics such as reproductive anatomy, chromosomes and physiological traits, while gender concerns social meanings, identities and patterns of behaviour associated with these and with broader systems of social classification.
Gender can refer to an individual's gender identity, to socially recognised categories, to expectations about appropriate behaviour, or to the wider social system through which institutions distribute roles and opportunities. Because the term has multiple uses, the relevant meaning should be specified when discussing it.
Gender develops through socialisation and interaction with families, peers, schools, media, workplaces and other institutions. Children encounter expectations concerning clothing, behaviour, emotions, occupations, relationships and responsibilities, and these expectations vary across cultures and historical periods. Socialisation does not mean that individuals passively absorb every expectation. People can accept, negotiate, reinterpret or reject gender norms, and institutions can change as social attitudes change. Gender norms can therefore be reproduced through everyday behaviour while also being challenged.
Toys, educational subjects, occupational expectations and assumptions about caregiving are common examples of areas where gendered expectations can emerge. The existence of such patterns does not establish that they are biologically inevitable because social and cultural variation demonstrates that gender roles are historically and contextually variable.
Gender is also an aspect of social structure because it can influence the distribution of roles, resources, authority and opportunities. Gender systems can affect education, employment, wages, occupational segregation, political representation, household labour, caregiving and access to decision making. Gender inequality occurs when people experience systematic differences in opportunities or outcomes associated with gender. Such inequality can operate through formal rules, informal norms, institutional practices and interpersonal behaviour. For example, occupational segregation can concentrate different genders in different sectors, while expectations about unpaid care can influence employment patterns. Gender therefore concerns more than individual identity. It can operate at the level of personal interaction, organisations and wider institutions.
Gender identity refers to a person's internal and socially expressed sense of their gender, which may or may not correspond to the sex they were assigned at birth. People may identify as women, men, non binary or in other ways, depending on personal identity and cultural context. Gender expression refers to how gender may be communicated through appearance, behaviour, clothing, speech or other practices, although expression does not necessarily reveal identity. These concepts should not be treated as interchangeable. A person's identity is not determined simply by appearance, and gender expression can vary considerably within every gender category. Contemporary social science therefore distinguishes identity, expression, roles and structural gender relations while recognising that they interact.
Gender roles are culturally defined expectations about behaviour and responsibilities associated with gender. Historically, many societies have assigned women greater responsibility for domestic work and caregiving while associating men more strongly with paid employment, authority and economic provision. These arrangements have varied substantially across cultures and historical periods and have changed through industrialisation, women's education, labour force participation, contraception, family law, political movements and changing cultural norms. Gender roles can also affect men by creating expectations concerning emotional restraint, occupational risk, financial provision or physical strength. Modern societies contain multiple and sometimes competing gender norms rather than one uniform model. Understanding gender therefore requires examining both continuity and social change.
Gender intersects with other dimensions of social position. Intersectionality is an approach that examines how gender interacts with class, race or ethnicity, disability, age, sexuality, migration status and other forms of social differentiation. The experiences associated with being a woman or man are not identical across all social groups because resources, discrimination and institutional conditions vary. For example, employment opportunities, caring responsibilities and exposure to discrimination can differ according to socioeconomic circumstances as well as gender. Intersectional analysis therefore avoids treating women or men as homogeneous categories. It also demonstrates why gender inequality cannot always be explained by gender alone. Multiple social positions can combine to create distinctive opportunities and constraints.
Gender is relevant to institutions such as the family, labour market, education system, healthcare, law, politics and media. In families, gender can influence divisions of unpaid labour and caregiving. In employment, it can influence occupational segregation, recruitment, promotion and earnings. In education, expectations can affect subject choices and participation. In politics, gender can shape representation and political experiences. In healthcare, sex related biological factors and gendered social conditions can influence health risks and access to services. Institutions can reproduce gender differences through routine practices, but they can also reduce them through equal opportunity rules, anti discrimination measures, parental leave, childcare provision, accessible healthcare and organisational reform.
Gender should not be confused with sex, sexuality, sexual orientation, gender expression or gender roles, although these concepts can interact. Sex concerns biological characteristics, sexuality concerns patterns of attraction and sexual identity, gender identity concerns one's sense of gender, gender expression concerns outward presentation, and gender roles concern socially expected behaviour. Definitions and classifications vary across disciplines and societies, so precise terminology is important.
Gender is also not synonymous with women because gender analysis includes men, women and people with other gender identities, as well as the social relationships among them. A comprehensive understanding of gender therefore considers identity, socialisation, institutions, power, inequality, culture and historical change. Gender is both personally experienced and socially organised, making it an important concept for understanding family life, work, education, politics, culture and broader patterns of social organisation.