The walnut tree, also known as Juglans regia, is a deciduous tree that is widely grown for its edible nuts. The tree is also highly valued for its timber and shade. However, there are several other synonyms for the walnut tree. These synonyms include the English walnut, Persian walnut, European walnut, and common walnut. Interestingly, the walnut tree belongs to the Juglandaceae family, also known as the walnut family. Besides, it is a medium-sized tree that can reach heights of up to 30 meters. Overall, the walnut tree is a valuable and popular tree species that has been cultivated for centuries.