The Euclidean norm is also called the Euclidean length, L2 distance, ℓ2 distance, L2 norm, or ℓ2 norm; see Lp space.
The distance derived from this norm is called the Manhattan distance or L1 distance.
نرم دو همون فاصله اقلیدسی هست و نرم یک همون فاصله منهتن