abruptness vs precipitousness

abruptness and precipitousness both are nouns.

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

As nouns, abruptness and precipitousness are synonyms defined as:

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

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

As nouns, abruptness and precipitousness are synonyms defined as:

abruptness and precipitousness: the property possessed by a slope that is very steep

Other synonyms of abruptness include steepness.

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