blackguard vs slang

blackguard and slang both are nouns.

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

As verbs, slang is a hyponym of blackguard; that is, slang is a word with a more specific, narrower meaning than blackguard:

Other hyponyms of blackguard include rail, revile, vilify, vituperate, curse.

blackguard (noun)	slang (noun)
someone who is morally reprehensible	a characteristic language of a particular group (as among thieves)
	informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar

blackguard (verb)	slang (verb)
use foul or abusive language towards	abuse with coarse language
subject to laughter or ridicule	fool or hoax
	use slang or vulgar language