hebetude vs sluggishness

hebetude and sluggishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
hebetude	Yes	No	No	No
sluggishness	Yes	No	No	No

As nouns, sluggishness is a hypernym of hebetude; that is, sluggishness is a word with a broader meaning than hebetude:

Other hypernyms of hebetude include lassitude, lethargy.

hebetude (noun)	sluggishness (noun)
mental lethargy or dullness	inactivity; showing an unusual lack of energy
	the pace of things that move relatively slowly
	a state of comatose torpor (as found in sleeping sickness)