dilatoriness vs slowness

dilatoriness and slowness both are nouns.

Word	Noun	Adjective	Verb	Adverb
dilatoriness	Yes	No	No	No
slowness	Yes	No	No	No

As nouns, slowness is a hypernym of dilatoriness; that is, slowness is a word with a broader meaning than dilatoriness:

Other hypernyms of dilatoriness include deliberateness, deliberation, unhurriedness.

dilatoriness (noun)	slowness (noun)
slowness as a consequence of not getting around to it	a rate demonstrating an absence of haste or hurry
	lack of normal development of intellectual capacities
	unskillfulness resulting from a lack of training