part
n.DescriptionA portion of a larger work established by the author, publisher, or manufacturer that is complete in itself.A division within the hierarchy of a collection.A piece written for one voice or instrument in a musical composition.
Notes
For monographic works, a part1 is usually synonymous with volume. However, it may refer to a bibliographic unit intended to be bound, with other parts, into a volume. A part is distinguished from a fascicle, the latter being a temporary division that is not necessarily congruent with an intellectual division. - Part2 can refer to a series within a record group or collection, a folder within a series, or an item within a folder.
