Before revision: Ivar Aasen defined fjell as a "tall berg", primarily referring to a berg that reaches an altitude where trees don't grow, lower berg are referred to as "berg", ås (hill, ridge) or hei (moor, heathland).
After revision: Ivar Aasen defined fjell as a "tall berg", primarily referring to a berg that reaches an altitude where trees do not grow, lower berg are referred to as "berg", ås (hill, ridge) or hei (moor, heathland).