The term 'volume unit' refers to a unit of measurement used to measure the amount of space an object occupies. Common volume units include the stere, PAGE, pint, sone, gallon, decibel, and liter. The stere is a unit of volume equal to one cubic meter. A PAGE is a unit of volume equal to one cubic centimeter. A pint is a unit of volume equal to one half of a quart. A sone is a unit of loudness equal to one loudness level. A gallon is a unit of volume equal to four quarts. A decibel is a unit of sound intensity equal to one tenth of a bel. Finally, a liter is a unit of volume equal to one thousandth of a cubic meter.