The term 'small stone' can be described by two crossword solutions: PEBBLE and PELLET. A PEBBLE is a small, rounded rock that is usually found on beaches or in rivers. It is usually smooth and often used for decoration or jewelry. A PELLET is a small, round object made of compressed material, such as clay, sand, or sawdust. It is often used in industrial processes, such as in the production of pellets for fuel. Both pebbles and pellets are small stones, but they have different characteristics and uses.