Norwegian is a North Germanic language spoken primarily in Norway and is the official language. Along with Swedish and Danish, Norwegian forms a continuum of mutually intelligible dialects. The languages developed from Old Norse, which was widespread during the Viking era but did not differ greatly between what are now Danish, Norwegian, and Swedish areas. Norwegian has a pitch accent system that uses two tones to distinguish words that are otherwise identical, like "farmers" and "beans." The exact pitch patterns vary between dialects.