Pumice stone is a volcanic rock that is commonly used to exfoliate the skin and remove dead skin cells. However, there are many synonyms for this versatile tool. Some possible synonyms include lava rock, volcanic ash, scoria, or volcanic glass. These materials are all formed from volcanic activity and can be used for the same purpose as a pumice stone. Another option is to use an alternative exfoliating tool, such as a loofah, natural sea sponge, or even a microfiber washcloth. These tools offer a different texture and feel than a pumice stone, but can still effectively remove dead skin cells and leave skin feeling smooth and refreshed.