Child custody is the right and duty to care for a child on a day-to-day basis and to make major decisions about the child.
In sole custody arrangements, one parent takes care of the child most of the time and makes major decisions about the child. That parent usually is called the custodial parent. The other parent generally is referred to as the noncustodial parent. The noncustodial parent almost always has a right of visitation a right to be with the child, including for overnight visits and vacation periods.
In joint custody arrangements, both parents share in making major decisions, and both parents also might spend substantial amounts of time with the child.