The remounting of a play production after its initial closing, usually by the same theatre company and/or employing many or most of the same artists. The term is not normally used to describe fresh restagings, by other artists, of older plays.
A revival is a restaging of a former hit play at a later date. New material may be added.
In fiction a revival is an attempt to revive or revitalize a defunct by producing new, original story lines. For example a television program which was once cancelled may be revived at a later date with new episodes created for broadcast.