skint vs bust

skint is not a noun while bust is a noun.

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

As adjectives, skint and bust are synonyms defined as:

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

skint (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

skint (adjective)	bust (adjective)
lacking funds	lacking funds

skint (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