Consumption is to be defined as the use of goods and services that are primarily used by the household sector. This is a component in the calculation of the Gross Domestic Product (GDP). Consumption, in economics, means the use of goods and services by the households. Consumption is different from consumption expenditure. This is the purchase of the goods and services that are used by the households.The definition of the word consumption is buying and using something. An example of consumption is eating a snack and some pastries.