The terms "ethnic" and "traditional" are used when it is required to emphasize the cultural roots of the dance.
If some dances, such as polka, cross ethnic boundaries and even cross the boundary between "folk" and "ballroom dance", ethnic differences are often considerable enough to mention.
For example, the German and Austrian schuhplattling dance consists of slapping the body and shoes in a fixed pattern, a feature that few other countries' dances have.
International folk dance groups exist in cities and college campuses in many countries, in which dancers learn folk dances from many cultures for recreation.
Balfolk events are social dance events with live music in Western and Central Europe, originating in the folk revival of the 1970s and becoming more popular since about 2000, where popular European partner dances from the end of the 19th century such as the schottische, polka, mazurka and waltz are danced, with additionally other European folk dances, mainly from France, but also from Sweden, Spain and other countries.