A closet is a small enclosed storage space built into the room, mainly an American term, while a wardrobe is a free-standing cupboard for hanging clothes, usually kept in a bedroom. Think of it this way: a closet is part of the house, a wardrobe is a piece of furniture you could carry out of it.
The core difference
A closet is a built-in storage space, while a wardrobe is a separate, movable piece of furniture used for the same purpose.
- closet — a small enclosed storage space, especially for clothes, mainly American usage: She hung her coat in the hallway closet.
- wardrobe — a tall, free-standing cupboard for hanging and storing clothes, usually in a bedroom: She pushed the coats to one side of the wardrobe to make room for her winter coat.
- wardrobe — also means a person's entire clothing collection, or a production's costume department: The wardrobe department fitted every actor for the final scene.
How to tell them apart
The clearest test is whether the thing could be moved. A closet is built into the structure of the room, so it stays put; a wardrobe is furniture, so it can be carried out the door. Closet comes from Old French closet, a small private space, from clos ("enclosed") plus the diminutive -et. Wardrobe comes from Old Northern French warderobe, combining garder ("to keep, guard") with robe ("garment") — literally a place to keep your robes safe.
Both words wander beyond furniture. Closet also works as an adjective for something kept secretly hidden, as in a closet fan, and as a verb for shutting someone away for a private talk. Wardrobe extends to a person's whole collection of clothing, or the costume department of a theatre or film production.
