https://medium.com/@beddingroyal/whats-the-difference-between-a-duvet-and-a-comforter-1fe649de5b59

Choosing The Right Duvet For You

If you are wondering what a duvet covers is and what it is, the answer is easy. Like a pillowcase to store your pillows, the duvet cover is designed for your duvet.

Let's begin with the duvet cover definition. Duvet covers are an upholstered case that is fitted around your duvet.