Anachronism
An anachronism (from the Greek ἀνά ana, "against" and χρόνος khronos, "time" ) is a chronological inconsistency in some arrangement, especially a juxtaposition of persons, events, objects, or customs from different periods of time. The most common type of anachronism is an object misplaced in time, but it may be a verbal expression, a technology, a philosophical idea, a musical style, a material, a plant or animal, a custom, or anything else associated with a particular period in time that is placed outside its proper temporal domain.

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Behavioral and cultural anachronism
The intentional use of older, often obsolete cultural artifacts may be regarded as anachronistic. For example, it could be considered anachronistic for a modern-day person to wear a top hat, write with a quill, or carry on a conversation in Latin. Such choices may reflect an eccentricity or an aesthetic preference.