precipitousness vs precipitateness

precipitousness and precipitateness both are nouns.

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

As nouns, precipitousness and precipitateness are synonyms defined as:

precipitousness and precipitateness: the quality of happening with headlong haste or without warning

Other synonyms of precipitousness include abruptness, precipitance, precipitancy, suddenness.

precipitousness (noun)	precipitateness (noun)
the property possessed by a slope that is very steep	the quality of happening with headlong haste or without warning
the quality of happening with headlong haste or without warning