Curtains are fabric panels used to cover windows, providing privacy, light control, and style. They come in various types, such as sheer for filtered light, blackout for darkness, and thermal for insulation and energy efficiency. Styles range from pleated drapes and modern grommet tops to decorative rod-pocket designs. Curtains are made from materials like cotton, linen, velvet, silk, or synthetic blends, with diverse patterns, colors, and textures to complement any room's decor.