Adit and Gradient

Adit noun - A nearly horizontal passage from the surface into a mine.

Gradient and adit are semantically related. In some cases you can use "Gradient" instead a noun "Adit".

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

Adit and gradient are semantically related. Sometimes you can use "Adit" instead a noun "Gradient".