Name change generally refers to the legal act by a person of adopting a new name different from their name at birth, marriage or adoption. The procedures and ease of a name change vary between jurisdictions. In general, common law jurisdictions have loose procedures for a name change while civil law jurisdictions are more restrictive. A pseudonym is a name that differs from the original or true name and does not require legal sanction. It is generally adopted to conceal a person's identity, but can also be done for personal, social or ideological reasons.