A nuclear family is a family unit consisting of two parents and their children. It is a traditional family structure that has been historically prevalent in Western societies.

Key characteristics of a nuclear family include:

• Two Parents: Typically a mother and a father.
• Children: Biological or adopted offspring of the parents.
• Separate Residence: Living in a household separate from other relatives like grandparents or aunts and uncles.

The nuclear family is often contrasted with extended families, where multiple generations live together in the same household.

For more information, you can refer to:

• Britannica - Nuclear Family