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>For other uses of the word button, see Button (disambiguation). A button is small disc- or knob-shaped object attached to cloth or an article of clothing. Buttons may be manufactured from an extremely broad variety of materials, including bone, ivory, metal, plastic, and wood. Buttons were first used by the Ancient Romans.The functional role of buttons is to fasten or cinch the openings of a garment. By sliding the button through a slit (the ) in the to which the first is to be held. The slit is only sufficiently wide to allow the button to be fully pushed through while still remaining stitched to the first piece of cloth. See more at Wikipedia.org...

mon usage, a collection is any group of items that has one or more properties in common, usually brought together for some specific purpose. See Collecting and Collectibles.The term can also be used more specifically:In mathematics, collection is not precisely defined, but can refer to various objects. Most often it refers to a set, class, family, or multiset.In museums and art galleries, the collection of objects in a particular field forms the core basis for the museum. In music, specifically diatonic set theory, a collection is similar to a tone row; see generated collection.In a church the collection is the money collected from the congregation during a service. The congregation normally place their donation into a collection plate or bag which is passed around and returned to the priest. Collection (Oxford Colleges) – college examinations in the University of Oxford. See more at Wikipedia.org...