Terminology of the Low Countries The Old Dutch form is "flāmisk", which becomes "vlamesc", "vlaemsch" in Middle Dutch and "Vlaams" in Modern Dutch. Flemish is now exclusively used to describe the majority of Dutch dialects found in Flanders, and as a reference to that region. Calques of "Vlaams" in other languages: In many languages including English, (a calque of) "Holland" is a common name for the Netherlands as a whole. Even the Dutch use this sometimes. Strictly speaking, Holland is only the central-western region of the country comprising two of the twelve provinces, North Holland and South Holland, and thus linguistically a "pars pro toto"
Languages of Belgium belong to the Flemish Community, 40% to the French Community and 1% to the German-speaking Community, though these figures relating to official Belgian languages include unknown numbers of immigrants and their children speaking a foreign language as primary language, and of Belgian regional migrants which may be assumed to largely balance one another for natively French and Dutch speakers. Though the standard form of Dutch used in Belgium is almost identical to that spoken in the Netherlands and the different dialects spread across the border, it is often colloquially called "Flemish". Dutch is the official language of the Flemish Community