bulky vs bulk

bulky is not a noun while bulk is a noun.

Word	Noun	Adjective	Verb	Adverb
bulky	No	Yes	No	No
bulk	Yes	No	Yes	No

bulky (noun)	bulk (noun)
	the property of something that is great in magnitude
	the property resulting from being or relating to the greater in number of two parts; the main part
	the property possessed by a large mass

bulky (adjective)	bulk (adjective)
of large size for its weight

bulky (verb)	bulk (verb)
	cause to bulge or swell outwards
	stick out or up
	to gain size and weight by means of exercise and diet