In law, a minor is someone under a certain age, usually the age of majority, which demarcates an underage individual from legal adulthood. The age of majority depends upon jurisdiction and application, but it is commonly 18. Minor may also be used in contexts that are unconnected to the overall age of majority. For example, the smoking and drinking age in the United States is 21, and younger people below this age are sometimes called minors in the context of tobacco and alcohol law, even if they are at least 18. The terms underage or minor often refer to those under the age of majority, but may also refer to a person under other legal age limits, such as the age of consent, marriageable age, driving age, voting age, working age, etc. Such age limits are often different from the age of majority.