dwell vs shack

dwell is not a noun while shack is a noun.

Word	Noun	Adjective	Verb	Adverb
dwell	No	No	Yes	No
shack	Yes	No	Yes	No

As verbs, shack is a hyponym of dwell; that is, shack is a word with a more specific, narrower meaning than dwell:

dwell (noun)	shack (noun)
	small crude shelter used as a dwelling

dwell (verb)	shack (verb)
think moodily or anxiously about something	move, proceed, or walk draggingly or slowly
come back to	make one's home in a particular place or community
be an inhabitant of or reside in
originate (in)
exist or be situated within