Drop-off and Gradient

Drop-off noun - The amount by which something is lessened.

Gradient and drop-off are semantically related. in lowering topic. In some cases you can use "Gradient" instead a noun phrase "Drop-off".

Gradient noun - The degree to which something rises up from a position level with the horizon.

Drop-off and gradient are semantically related. Sometimes you can use "Drop-off" instead a noun "Gradient".