dwell vs shack up

dwell and shack up both are verbs.

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

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

dwell: be an inhabitant of or reside in
shack up: share living quarters; usually said of people who are not married and live together as a couple

dwell (verb)	shack up (verb)
think moodily or anxiously about something	share living quarters; usually said of people who are not married and live together as a couple
come back to
be an inhabitant of or reside in
originate (in)
exist or be situated within