dwell vs bivouac

dwell is not a noun while bivouac is a noun.

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

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

dwell (noun)	bivouac (noun)
	temporary living quarters specially built by the army for soldiers
	a site where people on holiday can pitch a tent

dwell (verb)	bivouac (verb)
think moodily or anxiously about something	live in or as if in a tent
come back to
be an inhabitant of or reside in
originate (in)
exist or be situated within