bulk large vs loom

bulk large is not a noun while loom is a noun.

Word	Noun	Adjective	Verb	Adverb
bulk large	No	No	Yes	No
loom	Yes	No	Yes	No

As verbs, bulk large and loom are synonyms defined as:

bulk large and loom: hang over, as of something threatening, dark, or menacing

Other synonyms of bulk large include brood, hover.

bulk large (noun)	loom (noun)
	a textile machine for weaving yarn into a textile

bulk large (verb)	loom (verb)
hang over, as of something threatening, dark, or menacing	weave on a loom
	appear very large or occupy a commanding position
	come into view indistinctly, often threateningly
	hang over, as of something threatening, dark, or menacing