Modern design uses geometric shapes, including rigid squares and rectangles along with smooth, even curves. Perfect circles and ovals are also common in modern interior design. Modern interior design is also generally very simple and even minimal, with few ornamental flourishes to interrupt the even, unbroken lines and flat surfaces.
Modern interior design makes use of many materials. Wood and plastic are common. Some designers do use natural wood as an organic contrast to more artificial shapes and materials. Glossy metals, such as stainless steel, are among the signature materials in modern interior spaces. Modern interior designers also make use of glass and plastic for their smooth, even surfaces.