The word product has many definitions. In industry, it means the quantity or total volume;or the products of the manufactures. In agriculture, it means the products of the season or of the farm. In business, it means the commodities offered for sale or a service that is marketed or sold as a commodity. In daily life, it means an artifact that has been created by someone or some process; or a consequence of someone’s efforts or of a particular set of circumstances. It also means the products of the brain.