Sheets: Linens covering a mattress.

Blanket: Covering for warmth on a bed.

Comforter: Thick, padded cover for sleeping under.

Pillowcase: Covering for pillows on a bed.

Bedclothing: Pertaining to sheets, blankets, and pillows.

Bedclothing: Used for covering a bed or mattress.

Bedclothing: Providing warmth while sleeping in bed.