precipitance vs precipitateness

precipitance and precipitateness both are nouns.

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

As nouns, precipitance and precipitateness are synonyms defined as:

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

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

precipitance (noun)	precipitateness (noun)
the quality of happening with headlong haste or without warning	the quality of happening with headlong haste or without warning