brush wiki:
>For other uses, see Brush (disambiguation). The term brush refers to a variety of devices mainly with bristles, wire or other filament of any possible material used mainly for cleaning, grooming hair, painting, deburring and other kinds of surface finishing, but also for many other purposes like (but not limited to) seals, alternative traction systems and any other use imaginable for this tool.
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wall wiki:
l is a usually solid structure that defines and sometimes protects space. Most commonly, a wall separates space in buildings into rooms, or protects or delineates a space in the open air. There are three principal types of structural walls: building walls, exterior boundary walls, and retaining walls.
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