A closet is an enclosed space, with a door, used for storage, particularly that of clothes. "Fitted closet" are built into the walls of the house so that they take up no apparent space in the room. Closets are often built under stairs, thereby using awkward space that would otherwise go unused. A piece of furniture such as a cabinet or chest of drawers serves the same function of storage, but is not a closet, which is an architectural feature rather than a piece of furniture. A closet always has space for hanging, whereas a cupboard may consist only of shelves for folded garments. The word "wardrobe" can refer to a free-standing piece of furniture, but according to the Oxford English Dictionary, a wardrobe can also be a "large cupboard or cabinet for storing clothes or other linen", including "built-in wardrobe, fitted wardrobe, walk-in wardrobe, etc."
Airing cupboard: A closet containing a water heater, with slatted shelves to allow air to circulate around the clothes or linen stored there.
Broom closet: A closet with top-to-bottom space used for storing cleaning items, like brooms, mops, vacuum cleaners, cleaning supplies, buckets, etc.
Coat closet: A closet located near the front door. Usually used to store coats, jackets, hoodies, sweatshirts, gloves, hats, scarfs, and boots/shoes. This kind of closet sometimes has shelving. It only has a rod and some bottom space used for clothes stored in boxes or drawers. Some may have a top shelf for storage above the rod.
Custom closet: A closet that is made specifically to meet the needs of the user.
Linen-press or linen closet: A tall, narrow closet. Typically located in or near bathrooms and/or bedrooms, such a closet contains shelves used to hold items such as toiletries and linens, including towels, washcloths, or sheets.
Pantry: A closet or cabinet in a kitchen used for storing food, dishes, linens, and provisions. The closet may have shelves for putting food on.
Spear closet A closet made to use up otherwise unused space in a building.
Though some sources claim that colonial American houses often lacked closets because of a "closet tax" imposed by the British crown, others argue that closets were absent in most houses simply because their residents had few possessions.
Closet organizers are integrated shelving systems. Different materials have advantages and disadvantages:
Wire shelving: Moderately difficult to install, wire shelves cannot hold much weight without giving in but are cheap.
Wood shelving: Difficult to install, wood shelving is sturdier and more expensive than wire.
Tube shelving: Easy to install, tube shelving involves few pieces and requires no cutting or measuring.