What is another word for "gradient"?

Roget's Thesaurus (1911) lists these synonyms for "gradient": acclivity, ascent, bank, beach, bend, bevel, bias, cant, crookedness, curve, declivity, descent, devexity, dip, distortion, downhill, easy, fall, gentle, ground, hill, inclination, intersect, lack, leaning, list, lurch, obliquity, parallelism, rapid, rise, rising, shelving, slant, slope, slopeness, swag, talus, tilt, tower.