A newspaper supplement, often a weekly section of its parent, usually has a tabloid or magazine format and covers wide-ranging and less time-critical subjects, as in The American Weekly, the 2004 version of Life, and Parade; newspaper supplements became common in France and Germany in the mid to late 19th century--they were called feuillton in French. In Chinese, they are called fukan.
Advertising supplements periodically accompany corresponding newspapers and are prepared by the paper's advertising staff instead of its editorial staff. It is common for them to covering topics such as real estate and automobiles, on behalf of the paper's frequent advertisers.
Supplements found on some dvds, hd dvds, and blu-ray discs, are more commonly known as special features, bonus features, or bonus material.