Sleepwear vs. Pajamas

Sleepwear and Pajamas Definitions
Sleepwear
Clothes, such as pajamas or a nightgown, worn in bed. Also called nightclothes, nightdress, nightwear.
Pajamas
A garment, usually consisting of loose-fitting pants and a shirt or top, worn for sleeping or lounging.
Sleepwear
Garments designed to be worn in bed; nightclothes
Pajamas
A pair of loose-fitting pants worn in South and Southeast Asia by men and women.
Pajamas
Clothes for wearing to bed and sleeping in, usually consisting of a loose-fitting shirt and pants/trousers.
Pajamas
Loose-fitting trousers worn by both sexes in various southern Asian countries including India.
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Pajamas
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.
Pajamas
Loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers
Pajamas
Lightweight trousers worn in various Eastern countries