A sidewalk (North American English), pavement (British English, Singaporean English), footpath (Oceanian English), or footway, is a path along the side of a road. Usually constructed of concrete or asphalt, it is designed for pedestrians. A sidewalk may accommodate moderate changes in grade (height) and is normally separated from the vehicular section by a curb. There may also be a median strip or road verge (a strip of vegetation, grass or bushes or trees or a combination of these) either between the sidewalk and the roadway or between the sidewalk and the boundary.