In cooking terms, any large, oily kernels found within a shell and used in food are commonly called nuts. Nuts are seeds, but not all seeds are nuts.

Botanical and culinary definitions for nuts vary. What may be considered a nut in culinary circles may not be in botany.

• Almonds are edible seeds
• Brazil nut is the seed from a capsule
• Cashew is the seed from an accessory fruit
• Coconuts are drupes
• Hazelnut
• Macadamia is a creamy white kernel of a follicle type fruit
• Chestnut
• Peanut is a seed from a legume type fruit
• Pecans
• Pine nut is the seed of several species of pine
• Pistachio is the seed of a thin-shelled drupe
• Walnut

source: partial information from Wikipedia