The supply of a commodity is the quantity of the commodity which producers desire to sell to consumers. Thus, it is a desired flow. It indicates how much firms are willing to sell per period of time and not how much they actually sell.
Factors which are used to carry out the process of production are called factors of production. In the modern economy, economists classified these factors into two categories.
A commercial bank is a financial institution which provides services such as accepting deposits, giving business loans, mortgage lending and basic investment products such as savings account and certificates of deposit.