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Chalkboard - A chalkboard or blackboard (and similar colour based names for the same thing) is a reusable writing surface on which text or drawings are made with chalk or other erasable markers. Chalkboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Whiteboard - A whiteboard is the name for any glossy surface, most commonly coloured white, where markings can be made. Whiteboards operate analogously to chalkboards - they allow markings that temporarily adhere to the surface of the board and that can be easily removed.
Source: BazSites.com
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