"Corylus Avellana Grandis" is a botanical name for a large hazelnut variety that is commonly found in the northern temperate regions. Some of the synonyms for this species include "European Hazelnut," "Filbert," and "Common Hazel." The European Hazelnut is renowned for its culinary usage, providing an essential ingredient in confectionery and baked goods. The Filbert, on the other hand, is typically larger than the European species and is often used for oil production. Common Hazel is the most commonly used name for this species due to its widespread distribution, which includes central and eastern Europe, western Asia, and parts of North Africa. Overall, these synonyms provide a better understanding of the plant's usage and distribution.