Dust cover and Piece of material

Dust cover noun - A large piece of cloth used to cover furniture that is not in use for a long period.

Piece of material and dust cover are semantically related. In some cases you can use "Piece of material" instead a noun phrase "Dust cover".

Piece of material noun - A separate part consisting of fabric.

Dust cover and piece of material are semantically related. Sometimes you can replace phrase "Dust cover" with "Piece of material", this phrases are similar.