The name Scottish Highlands is often used by people when they refer to Scotland but there is also an area called Lowlands. However, both terms are in fact remains from history.
In earlier times the Highland region was dominated by the Gaels and their Gaelic language and culture while the lowlands were Scottish. The dividing line was everything west from the Great Glen (Inverness to Loch Lynnhe and the islands) and roughly 50 miles of land east of the Great Glen. In a way this line still exists and there are still differences between Highland and Lowland culture and language although most Gaelic speakers are nowadays confined to the islands in the west with a Gaelic stronghold in the Outer Hebrides.