Rug and Wall-to-wall

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

Wall-to-wall and rug are semantically related In some cases you can use "Wall-to-wall" instead a noun "Rug".

Wall-to-wall adjective - Present in all places and at all times.

Rug and wall-to-wall are semantically related in nappy floor covering topic. Sometimes you can use "Rug" instead a noun phrase "Wall-to-wall".