Expenses relating to household keeping and general living: housing, transport, food, supplies (energy, water, telephone), taxes, health, travel, leisure and incidentals.

Estimate of costs, revenues, and resources over a specified period for a specific household.

The theory and practice of household management. (source: http://www.merriam-webster.com/dictionary/domestic%20economy)

DI is the total income that can be used by the household sector for either consumption or saving during a given period of time, usually

The end result of production and manufacturing and are purchased for consumption by the average consumer. (source: http://www.investopedia.com/terms/c/consumer-goods.asp)