precipitateness vs abruptness

precipitateness and abruptness both are nouns.

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

As nouns, precipitateness and abruptness are synonyms defined as:

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

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

precipitateness (noun)	abruptness (noun)
the quality of happening with headlong haste or without warning	the quality of happening with headlong haste or without warning
	the property possessed by a slope that is very steep
	an abrupt discourteous manner