Pine nuts, also called piñón (spanish: [piˈɲon]), pinoli (italian: [piˈnɔːli]), pignoli or chilgoza (urdu: [چلغوزہ]), are the edible seeds of pines (family pinaceae, genus pinus). according to the food and agriculture organization, only 29 species provide edible nuts, while 20 are traded locally or internationally owing to their seed size being large enough to be worth harvesting; in other pines, the seeds are also edible, but are too small to be of notable value as a human food.

Source: Wikipedia