To remove an existing item and place another item in its position or role, often involving a change of the same type or category.

To exchange or trade one object for another, typically implying a transaction or a substitution that maintains a specific value or equivalence.

To allow another entity to take over the function or responsibility of a particular item, effectively substituting or standing in for it.

To serve a second helping of food or drink, indicating a replenishment of what has been consumed.