The two main differences between extended family and joint family are:
Structure and Living Arrangement:
An extended family includes relatives beyond the nuclear family such as grandparents, uncles, aunts, and cousins. They may or may not live together in the same house.
In contrast, a joint family consists of parents, their children, and other close relatives like grandparents, uncles, and aunts who usually live together under one roof.
Property and Decision-Making:
In an extended family, members may live separately and manage their own income and property independently.
In a joint family, property and income are generally shared among members, and decisions are often taken collectively by the head of the family.