Curtain is a piece of cloth that is hung in front of a window or a door. It is used as a divider between rooms at times when used at a doorway as opposed to having a door. These kinds of curtains are called portières. Curtains are shades used to block, retract or filter out light and heat from the outdoors keeping indoors cool but without preventing the circulation of fresh air.
Shower curtains are curtains used in a shower to prevent water from flowing into the other regions of the bathroom. The curtains used in showers are a different material that those used in other parts of home.