An au pair is a person that takes care of children, but there are some specific qualities that distinguish them from a nanny or babysitter. Au pairs are young adults who work as live-in caretakers of children in exchange for room and board.
Au pairs are usually not citizens of the country in which they are working. They also may be expected to assist in general housekeeping duties in addition to offering child care. Since au pairs live with the family around the clock, they are expected to integrate more into daily household life. The age ranges for an au pair arrangement vary by country and are usually set by the government.