Rice is the seed of the grass species Oryzasativa (Asian Rice) or Oryzaglaberrima (African Rice). As a cereal grain, it is the most widely consumed staple food for a large part of the world’s human population, especially in Asia. It is the agricultural commodity with the third-highest worldwide production, after sugarcane and maize.
Sugars are found in the tissues of most plants and are present in sugarcane and sugar beet in sufficient concentrations for efficient commercial extraction.Sugar is the generic name for sweet, soluble carbohydrates, many of which are used in food.The "table sugar" or "granulated sugar" most customarily used as food is sucrose, a disaccharide of glucose and fructose.
Grains are small, hard, dry seeds, with or without attached hulls or fruit layers, harvested for human or animal consumption. "Grain crops" is the term used for grain seed producing plants by agronomists. The two main types of commercial grain crops are cereals (wheat, rye) and legumes (beans, soybeans).
Legumes are grown agriculturally, primarily for their grain seed called pulse, for livestock forage and silage, and as soil-enhancing green manure. Well-known Pulses include alfalfa, clover, peas, beans, chickpeas, lentils, lupin bean, mesquite, carob, soybeans, peanuts and tamarind. Pulses is the most common family found in tropical rainforests and in dry forests in the Americas and Africa.
An oil is any neutral, nonpolar chemical substance that is a viscous liquid at ambient temperatures and is both hydrophobic (immiscible with water, literally "water fearing") and lipophilic (miscible with other oils, literally "fat loving"). Oils have a high carbon and hydrogen content and are usually flammable and surface active.