Hazelnut is used as an enhancement ingredient in many high quality confectionery and bakery products, as well as ice-creams and salted snack mixes. Turkey is the largest producer of hazelnuts in the world.
Pecan nuts are basically from USA & Australia. It looks like a smaller version of the walnut kernel. It has a rich, buttery flavor. They can be eaten fresh or used in cooking, particularly in sweet desserts, but also in some savory dishes.