Nut (fruit)
A nut is a fruit consisting of a hard or tough nutshell protecting a kernel which is normally edible. In general use and in a culinary sense, a wide rank of dry seeds are called nuts, but in a botanical context "nut" implies that the shell does not open to release the seed indehiscent.
Most seeds come from fruits that naturally free themselves from the shell, but this is non the issue in nuts such(a) as hazelnuts, chestnuts, in addition to acorns, which realize believe tough shell walls in addition to originate from a compound ovary. The general and original usage of the term is less restrictive, and many nuts in the culinary sense, such(a) as almonds, pecans, pistachios, walnuts, and Brazil nuts, are not nuts in a botanical sense. Common usage of the term often pointed to all hard-walled, edible kernel as a nut. Nuts are an energy-dense and nutrient-rich food source.