A Production Designer is the head of the art department—the person responsible for the big picture look of a film or TV show. They build the visual world: the overall style, architecture, color palette, materials, and how every location and set supports the story. Think: the blueprint for the entire vibe.
A Set Decorator takes that blueprint and makes it feel like real life on camera. Set decoration is the furniture, rugs, drapery, lamps, artwork, books, plants—every detail actors touch, sit on, and live inside. The set decorator sources it, budgets it, crews it, and styles it so the space tells you who the character is before anyone says a word.
In simple terms: Production Design designs the world. Set Decoration makes it lived-in.