debunk vs blackguard

debunk is not a noun while blackguard is a noun.

Word	Noun	Adjective	Verb	Adverb
debunk	No	No	Yes	No
blackguard	Yes	No	Yes	No

As verbs, blackguard is a hypernym of debunk; that is, blackguard is a word with a broader meaning than debunk:

debunk: expose while ridiculing; especially of pretentious or false claims and ideas
blackguard: subject to laughter or ridicule

Other hypernyms of debunk include guy, jest at, laugh at, make fun, poke fun, rib, ridicule, roast.

debunk (noun)	blackguard (noun)
	someone who is morally reprehensible

debunk (verb)	blackguard (verb)
expose while ridiculing; especially of pretentious or false claims and ideas	use foul or abusive language towards
	subject to laughter or ridicule