Quantity Demanded
The amount of a good or service people will buy at a given price in a given period of time.
Quantity Supplied
The amount of a good or service sellers are willing and able to offer at a given price in a given period of time.
Supply
The amount of a good or service that producers are willing and able to offer for sale at each possible price during a given period of time.
Glossary terms from: http://www.econedlink.org/lessons/index.php?lid=13&page=teacher
