Difference between Hazelnut and Chestnut

Hazelnut

Part of speech: noun

Definition: fruit of the hazel tree

Chestnut

Part of speech: adjective

Definition: Of a deep reddish-brown colour, like that of a chestnut.

Part of speech: noun

Definition: A tree or shrub of the genus Castanea.The nut of this tree or shrub.A dark, reddish-brown colour/color.A reddish-brown horse.The wood of a chestnut tree.(Often "old chestnut") A worn-out meme; a work so often repeated as to have grown tiresome.A part of a horse found on the inner leg, similar to a birthmark on a human.