A hiatal hernia occurs when the upper part of your stomach pushes up through your diaphragm and into your chest region. The diaphragm is a large muscle that lies between your abdomen and chest. You use this muscle to help you breathe. Normally, your stomach is below the diaphragm, but in people with a hiatal hernia, a portion of the stomach pushes up through the muscle. The opening it moves through is called a hiatus. This condition mostly occurs in people who are over 50 years old.
A commodity generally refers to an agricultural product that is bought and sold such as corn, coffee, wheat, etc. Energy commodities include gas, electricity, oil, etc.
1 A product refers to an arrangement for buying and selling of commodities. 2  The examples of product market are Rice market, Fish market, etc. 3  In the product market the households are the buyer.4  The demand for product is a direct demand. The demand for product is a direct demand. 2  The price of the product is determined by the interaction of demand and supply of product. 3  This market facilitates exchange of goods and services in the society.