Littlenecks are a popular type of small clams that are often enjoyed in various seafood dishes. However, there are several synonyms for this particular type of clam depending on the region. In the northeastern United States, littlenecks are also called cherrystones or little neck clams. In other parts of the world, they may be referred to as manila clams or venus clams. These synonyms may be used interchangeably or may vary in their specific size or flavor profile. Regardless of what they are called, these small clams are a delicious addition to any seafood dish.