Nis forNut (tool)
A nut is used to fasten onto the other end of a bolt to hold things together. Nuts are threaded on the inside and are screwed onto the thread at the end of the bolt.
Nis forNut (seed)
Scientific name: arachis hypogea
The peanut is not a true not and, in fact, related to the pea - they are both legumes. Peanuts develop in a pod, like peas, with 1-4 peanuts in each pod. The pods force themselves underground to mature. Peanuts are usually sold in shops removed from their shell, roasted and salted. Peanuts are also frequently ground into a fine paste called peanut butter which is good to eat on sandwiches with jam or jelly.
Some people get a violent allergic reaction to eating peanuts, called anaphylactic shock, which can kill them. As this allergy is more common in children and more children each year are being found to have it, peanuts are often banned in schools.
The peanuts in the picture are unopened, still in their shells.
Scientific name: pinus pinea
Pine nuts are the seeds of pine trees, most notably the stone pine. All pine tree seeds are edible, but only some varieties are big enough to be worth harvesting. Most pine nuts you buy in shops come from stone pines.
Pine nuts are a major ingredient of pesto.
Scientific name: juglans regia
Walnuts are the seeds of a large tree that is also grown for its wood. The most common walnut tree is originally from Iran (Persia). Walnuts can be eaten raw or used in cooking, especially in fruit cakes and sweet desserts.