Languages of Sweden
Swedish is the official language of Sweden and is spoken by the vast majority of the 10 million inhabitants of the country. It is a North Germanic language and quite similar to its sister Scandinavian languages, Danish and Norwegian, with which it maintains partial mutual intelligibility and forming a dialect continuum. Five "national minority languages" are also recognized by Swedish law: Finnish, Yiddish, Meänkieli, Romani and Sami.
Finland Swedish
Finland Swedish is regulated by the Institute for the Languages of Finland. Official Swedish is not supposed to be very different from Swedish as found in Sweden. There are however e.g. words regarded as archaic in Sweden, but commonly used in Finland, and terms that differ from their counterparts in Sweden, often because of slight differences in the related legislation.