In grammar, the placing of a noun or noun phrase next to another that refers to the same thing (We'll take the easiest route, the east ridge, to the top). The word or phrase in apposition is marked off from its antecedent (to which it refers) by a pair of commas.
Red and white are the colours of Bohemia, dating back to the 13th century. Blue represents Moravia. Unlike that of the Slovak Republic, the Czech flag is not based on the pan-Slav colours. Effective date: 1 January 1993.