A rug pad is a crucial accessory for anyone who wants to keep their floors in great condition while also protecting their rugs. However, sometimes you might need to find a different term to describe it. Some synonyms for rug pad include underlayment, carpet padding, rug underlay, cushion underlay, and floor padding. In essence, any material that is placed underneath a rug to provide cushioning and prevent slipping can be referred to as a rug pad. It's important to choose the right type of pad for your flooring and your rug, so be sure to do your research before making a purchase. With the right rug pad, you can enjoy your rugs for years to come without damaging your floors.