elnut is the fruit of the hazel and therefore includes any of the NUTS DERIVING from SPECIES of the genus Corylus, especially the nuts of the species Corylus avellana. They are ALSO known as cobnuts or filberts according to species.The hazelnut is the fruit of the hazel and therefore includes any of the nuts deriving from species of the genus Corylus, especially the nuts of the species Corylus avellana. They are also known as cobnuts or filberts according to species.thanks plsss❤️The hazelnut is the fruit of the hazel and therefore includes any of the nuts deriving from species of the genus Corylus, especially the nuts of the species Corylus avellana. They are also known as cobnuts or filberts according to species.thanks plsss❤️pls mark me brainliest The hazelnut is the fruit of the hazel and therefore includes any of the nuts deriving from species of the genus Corylus, especially the nuts of the species Corylus avellana. They are also known as cobnuts or filberts according to species.thanks plsss❤️pls mark me brainliest itzzzurcutejann(◍•ᴗ•◍)❤