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Collection

In common usage, a collection is any group of items that has one or more properties in common. For example, paintings from the same artist, or coins from Germany before 1900, see collecting and collectible.

In mathematics, collection is another term for set, or sometimes for class.

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KANU

... while KANU was in favour of centralism. The advantage lay with the numerically stronger KANU, and the British government was finally forced to remove all provisions ...