hastiness vs abruptness

hastiness and abruptness both are nouns.

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

As nouns, abruptness is a hyponym of hastiness; that is, abruptness is a word with a more specific, narrower meaning than hastiness:

Other hyponyms of hastiness include precipitance, precipitancy, precipitateness, precipitousness, suddenness, oversteer.

hastiness (noun)	abruptness (noun)
hasty impulsiveness	the quality of happening with headlong haste or without warning
overly eager speed (and possible carelessness)	the property possessed by a slope that is very steep
	an abrupt discourteous manner