Noun gradient has 2 senses
  1. gradient - a graded change in the magnitude of some physical quantity or dimension
    --1 is a kind of
    --1 has particulars: gravity gradient; temperature gradient
  2. gradient, slope - the property possessed by a line or surface that departs from the horizontal; "a five-degree gradient"
    --2 is a kind of position, spatial relation
    --2 has particulars:
     grade; pitch, rake, slant; abruptness, precipitousness, steepness; gradualness, gentleness