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.
In economics, any commodity which is produced and subsequently consumed by the consumer, to satisfy his current wants or needs, is a consumer good or final good. Consumer goods are goods that are ultimately consumed rather than used in the production of another good. For example, a microwave oven or a bicycle which is sold to a consumer is a final good or consumer good, whereas the components which are sold to be used in those goods are called intermediate goods. For example, textiles or transistors which can be used to make some further goods.