Discrimination describes less favourable treatment of a person because of a protected or prohibited characteristic, such as sex, race, disability, age, religion, sexual orientation or other specified grounds. In legal practice it commonly arises in employment law, equality law, education, housing and the provision of goods and services. In England and Wales, Scotland and (with adaptations) Northern Ireland, the concept is principally defined in statute, notably the Equality Act 2010 (and, in Northern Ireland, a suite of separate anti-discrimination Orders and Regulations). In Ireland, it is primarily governed by the Employment Equality Acts and Equal Status Acts. Key legal features typically include: - direct discrimination (less favourable treatment because of a protected ground); - indirect discrimination (a provision, criterion or practice that puts a group at a particular disadvantage and is not objectively justified); - harassment and victimisation linked to protected grounds; - reasonable accommodation or reasonable adjustment duties for disabled persons. Usage and underlying concepts are broadly consistent across the UK and Ireland, though protected grounds, defences, justification tests, burden of proof rules, time limits and available remedies differ by jurisdiction and statutory scheme.