The world of the play is its cultural and historical context as well as the characters' situation and relationships. Old plays can be reinterpreted and their time and setting changed.
The quality of the language you use will help create the right context and any sense of period that's needed when you’re devising a piece of theatre. Shakespeare’s plays are often accused of being hard to understand and out of date. In fact they’re written in modern English and Shakespeare actually invented a lot of the expressions we use today