broke vs bust

broke is not a noun while bust is a noun.

Word	Noun	Adjective	Verb	Adverb
broke	No	Yes	No	No
bust	Yes	Yes	Yes	No

As adjectives, broke and bust are synonyms defined as:

Other synonyms of broke include skint, stone-broke, stony-broke.

broke (noun)	bust (noun)
	an occasion for excessive eating or drinking
	a sculpture of the head and shoulders of a person
	the chest of a woman
	a complete failure

broke (adjective)	bust (adjective)
lacking funds	lacking funds

broke (verb)	bust (verb)
	break open or apart suddenly and forcefully
	go to pieces
	ruin completely
	separate or cause to separate abruptly
	search without warning, make a sudden surprise attack on