Clinkstone is a type of rock that is commonly used in construction due to its durability and strength. However, there are several other synonyms for this term that can be used interchangeably. These synonyms include ashlar, cobblestone, flagstone, and pebblestone, among others. Ashlar is a finely cut masonry block that is used as a building material, while cobblestone is a rounded stone that is used for paving roads and walkways. Flagstone is a type of flat stone that is used for outdoor flooring and pebblestone is a small, smooth stone that is often used for decoration or as a natural flooring material. All of these synonyms offer similar qualities to clinkstone, making them popular choices for construction and design projects.