a wooden or metal frame with horizontal and/or vertical supports a flat surface to hold items brackets or pegs to hold items adjustable or fixed shelving visible screws or nails labels or tags to identify items
shelf which is a wooden or metal frame with horizontal and/or vertical supports shelf which is a flat surface to hold items shelf which has brackets or pegs to hold items shelf which is adjustable or fixed shelving shelf which has visible screws or nails shelf which has labels or tags to identify items