Rug and Throw rug

Rug noun - A headpiece made of natural or synthetic hair usually worn to cover a bald area.

Throw rug and rug are semantically related. in carpet topic. In some cases you can use "Throw rug" instead a noun "Rug".

Throw rug noun - A small rug; several can be used in a room.

Rug and throw rug are semantically related. You can use "Rug" instead a noun phrase "Throw rug".