The majority of the population of Scandinavia (including Iceland and the Faroe Islands) today derive their language from several North Germanic tribes who once inhabited the southern part of Scandinavia and spoke a Germanic language that evolved into Old Norse and from Old Norse into Danish, Swedish, Norwegian, Faroese, and Icelandic. The Danish, Norwegian and Swedish languages form a dialect continuum and are known as the Scandinavian languages—all of which are considered mutually intelligible with one another. Faroese and Icelandic, sometimes referred to as insular Scandinavian languages, are intelligible in continental Scandinavian languages only to a limited extent.