Sleepwear vs. Pajamas — What's the Difference?

Clothes, such as pajamas or a nightgown, worn in bed. Also called nightclothes, nightdress, nightwear.

Pajamas (US) or pyjamas (Commonwealth) (), sometimes shortened to PJs, jammies, or Jim-jams, are several related types of clothing originating from South Asia. Adopted in the Western world, pajamas are soft, warm, and traditionally loose garments derived from the Indian and Persian bottom-wear, the pyjamas.

Garments designed to be worn in bed; nightclothes

A garment, usually consisting of loose-fitting pants and a shirt or top, worn for sleeping or lounging.

Clothes for wearing to bed and sleeping in, usually consisting of a loose-fitting shirt and pants/trousers.

Loose-fitting trousers worn by both sexes in various southern Asian countries including India.

Originally, in India, loose drawers or trousers, such as those worn, tied about the waist, by Mohammedan men and women; by extension, a similar garment adopted among Europeans, Americans, etc., for wear in the dressing room and during sleep; also, a suit consisting of drawers and a loose upper garment for such wear.

A pair of loose-fitting pants worn in South and Southeast Asia by men and women.

Loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers

Lightweight trousers worn in various Eastern countries