Nightwear
Part of speech: noun
Definition: Clothes worn at nighttime
Sleepwear
Part of speech: noun
Definition: garments designed to be worn in bed; nightclothes
Nightwear as a noun is clothes worn at nighttime while Sleepwear as a noun is garments designed to be worn in bed; nightclothes
Part of speech: noun
Definition: Clothes worn at nighttime
Part of speech: noun
Definition: garments designed to be worn in bed; nightclothes
We hope you now know whether to use Nightwear or Sleepwear in your sentence.