A blanket. It's just a blanket.

A quilt used in place of a bedspread or topsheet. Often is down-filled, and commmon in northern European countries.

An ounce of weed. Also a synonym for cover.

The only thing that'd ever be on top of you (because it doesnt have much of a choice-). Is usually made with a fairly soft material so you can sleep comfy, while knowing perfectly well that no one is in the bed with you because you're lonely :)

A cover, like a pillowcase, to protect and beautify a comforter, often down, because down comforters are expensive, precious, and delicate. A down comforter with a tear, rip, or hole will leak.

A blanket for old people/intellectuals