An anachronism (from the Greek ??? ana, "against" and ?????? khronos, "time") is a chronological inconsistency in some arrangement, especially a juxtaposition of person(s), 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/textile, a plant or animal, a custom or anything else associated with a particular period in time so that it is incorrect to place it outside its proper temporal domain.