A nanny is a person who provides child care. Typically, this care is given within the children's family setting. Throughout history, nannies were usually servants in large households and reported directly to the lady of the house. Today, modern nannies, like other domestic workers, may live in or out of the house, depending on their circumstances and those of their employers. Some employment agencies specialize in providing nannies, as there are families that specifically seek them and may make them a part of the household.

Childcare, otherwise known as day care, is the care and supervision of a child or multiple children at a time, whose ages range from two weeks of age to 18 years. Although most parents spend a significant amount of time caring for their child(ren), childcare typically refers to the care provided by caregivers that are not the child's parents. Childcare is a broad topic that covers a wide spectrum of professionals, institutions, contexts, activities, and social and cultural conventions. Early childcare is an important and often overlooked component of child development.