Definition: the floor of a building that is at or nearest to the level of the ground around the building
Definition: a structure consisting of a room or set of rooms at a single position along a vertical scale
Usage: what level is the office on?
Definition: the height of the ground on which something stands
Usage: the base of the tower was below grade
Similar words: elevation
Definition: distance of something above a reference point (such as sea level)
Usage: there was snow at the higher elevations