Nut (fruit)

A nut is a fruit consisting of a hard or tough nutshell protecting a kernel which is usually edible.

These include beech (Fagus), chestnut (Castanea), oak (Quercus), stone-oak (Lithocarpus) and tanoak (Notholithocarpus) in the family Fagaceae, as well as hazel, filbert (Corylus) and hornbeam (Carpinus) in the family Betulaceae.

In botany, the term "nutlet" can be used to describe a pyrena or pyrene, which is a seed covered by a stony layer, such as the kernel of a drupe.

[8] Many experts suggest that a person with an allergy to peanuts should avoid eating tree nuts, and vice versa.

[7] Composition varies, but they tend to have a low water and carbohydrate content, with high levels of fats, protein, dietary minerals, and vitamins.