abruptness vs slope

abruptness and slope both are nouns.

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

As nouns, slope is a hypernym of abruptness; that is, slope is a word with a broader meaning than abruptness:

abruptness: the property possessed by a slope that is very steep
slope: the property possessed by a line or surface that departs from the horizontal

Other hypernyms of abruptness include gradient.

abruptness (noun)	slope (noun)
the quality of happening with headlong haste or without warning	the property possessed by a line or surface that departs from the horizontal
the property possessed by a slope that is very steep	an elevated geological formation
an abrupt discourteous manner

abruptness (verb)	slope (verb)
	be at an angle