Romansh is a Gallo-Rhaetian member of the Italic subgroup of the Indo-European language family spoken by 40,000 people along the borders of Switzerland, Austria and Italy.
Romansh is also known as Romansch, Rheto-Romance, Rhaeto-Romance and Romanche.
Rumantsch Grischun is the common written language of the Romansh people: It is based to a large extent on the three written idioms used in the Romansh-speaking Grisons, Sursilvan (Surselva), Vallader (Lower Engadine) and Surmiran (Surmeir/Albula Valley). In many cases, however, it also considers the two minor idioms Sutsilvan (Val Schons) and Put?r (Upper Engadine), as well as the various regional and local variants. [Adapted from: Lia Rumantsch]
Ladin (also known as Dolomitic Ladin) is the variety of Romansh (Rhaeto-Romance) spoken in some eastern valleys of the Italian region of Trentino-Alto Adige (or South Tirol). It is not an Italian dialect.