change - a relational difference between states; especially between states before and after some event; "he attributed the change to their marriage"

gravity gradient - a gradient in the gravitational forces acting on different parts of a nonspherical object; "the gravity gradient of the moon causes the ocean tides on Earth"

temperature gradient - change in temperature as a function of distance (especially altitude)

grade - the gradient of a slope or road or other surface; "the road had a steep grade"

rake, slant, pitch - degree of deviation from a horizontal plane; "the roof had a steep pitch"

precipitousness, steepness, abruptness - the property possessed by a slope that is very steep

gentleness, gradualness - the property possessed by a slope that is very gradual

spatial relation, position - the spatial property of a place where or way in which something is situated; "the position of the hands on the clock"; "he specified the spatial relations of every piece of furniture on the stage"