Hard-shell clam is a popular seafood delicacy that is enjoyed by people all over the world. However, the term "hard-shell clam" can often be confusing for people who are not familiar with this type of seafood. Fortunately, there are several synonyms for the word "hard-shell clam" that can help clarify this delicious dish. Some common synonyms for this seafood include quahog, round clam, cherrystone clam, and littleneck clam. Each of these synonyms describes a different type of clam, but all are characterized by their hard, protective shell and their succulent, flavorful meat. Whether you call it a hard-shell clam or one of its many synonyms, this seafood is sure to be a crowd-pleaser.