A "family unit" refers to a group of individuals who are related by blood, marriage, or adoption. This group typically includes parents and their children, but it can also extend to other relatives such as grandparents, aunts, uncles, and cousins. The family unit serves as a primary social structure, providing emotional support, care, and a sense of belonging. Family units can vary widely in size and composition, reflecting cultural, social, and economic factors. Some families may consist of a single parent and their children, while others may include multiple generations living together. The dynamics within a family unit can influence individual development and well-being.