Linked from
The 5 pages that link to Hazelnut, each with the reason it gives.
Nut (fruit)Broader topic: A hazelnut is a true nut with a hard pericarp around one seed.
BetulaceaeBroader topic: It is the family’s best-known food crop and a major commercial nut.
CupuleBroader topic: Its husk is a cupule that can extend beyond the nut.
FagalesBroader topic: Hazelnuts connect the order to a major cultivated food crop.
Corylus maximaRelated: The crop name is shared across cultivated hazel species, including C. maxima.