There are several synonyms that refer to the delicious and nutritious Australian chestnut. Some of the common synonyms that are used to refer to this nut include sweet chestnut, horse chestnut, chinquapin, and marron. These synonyms refer to the same nut, but might be more commonly used in different regions or contexts. Sweet chestnut is usually used to refer to nuts that are roasted and served as a snack, while horse chestnut is used to refer to the tree or shrub that produces the nuts. Chinquapin and marron, on the other hand, are commonly used in the southern United States to refer to smaller varieties of the chestnut. Regardless of the synonym used, the Australian chestnut remains a delicious and nutritious nut that is enjoyed all around the world.