Synonyms
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Disambiguation
Account id, account name, user id, username, user name, login, login id, and login name are often synonyms, referring to the concept of a unique identifier used by a subject to claim its identity.
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With this meaning, the terms user id and user name are ambiguous because the term user, which is ambiguous by itself, may (or may not?) imply that the subject is a human being. Quoting RfC 2828, 2000: “Any ISD that uses this term [user] SHOULD provide an explicit definition, because this term is used in many ways and can easily be misunderstood.“. In this context, the term user should be discouraged.
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