The communities of the highland areas of Britain differed in many ways from those of the south-east: settlement appears to have been generally sparser, the material culture was poor, and pottery was very little used over most of the area except in the extreme north-west of Scotland. For these reasons, definition of regional groupings is more difficult, and in some places impossible, and even where there is some material basis for chronological or regional division, precise definitions comparable with those obtainable in the south-east can rarely be achieved.