Family- a close group people, usually related not always who support each other and at some point in their lives thend to live in the same household
Household- a person living alone or a group of people living together who may not may not be related. E.g. a group of university students living together are not a family
Nuclear family- a family consisting of two parents and their dependent children
Extended family- a family of three generations living together
Other types of families:
Living apart togethers- e.g. 'dating'
Living together aparts- e.g. 'work collegues living together'
Reconstituated families- e.g. 'a man with children marrying a divorced woman with children'
Childless couple families- e.g. a woman may not want children to persue her career
Go it alone mothers