roast vs blackguard

roast and blackguard both are nouns.

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

As verbs, roast and blackguard are synonyms defined as:

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

roast (noun)	blackguard (noun)
negative criticism	someone who is morally reprehensible
a piece of meat roasted or for roasting and of a size for slicing into more than one portion

roast (adjective)	blackguard (adjective)
(meat) cooked by dry heat in an oven

roast (verb)	blackguard (verb)
cook with dry heat, usually in an oven	use foul or abusive language towards
subject to laughter or ridicule	subject to laughter or ridicule