precipitousness vs gradient

precipitousness and gradient both are nouns.

Word	Noun	Adjective	Verb	Adverb
precipitousness	Yes	No	No	No
gradient	Yes	No	No	No

As nouns, gradient is a hypernym of precipitousness; that is, gradient is a word with a broader meaning than precipitousness:

precipitousness: the property possessed by a slope that is very steep
gradient: the property possessed by a line or surface that departs from the horizontal

Other hypernyms of precipitousness include slope.

precipitousness (noun)	gradient (noun)
the property possessed by a slope that is very steep	the property possessed by a line or surface that departs from the horizontal
the quality of happening with headlong haste or without warning	a graded change in the magnitude of some physical quantity or dimension