precipitance vs suddenness

precipitance and suddenness both are nouns.

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

As nouns, precipitance and suddenness are synonyms defined as:

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

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

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