 Second, there is regional variation between dialects.The competition between the popular and the learned registers (see Diglossia), culminated in the struggle between "Dimotiki" (Demotic Greek) and "Katharevousa" during the 19th and 20th centuries.As for regional dialects, variation within the bulk of dialects of present-day Greece is not particularly strong, except for a number of outlying, highly divergent dialects spoken by isolated communities.