laugh at vs debunk

laugh at and debunk both are verbs.

Word	Noun	Adjective	Verb	Adverb
laugh at	No	No	Yes	No
debunk	No	No	Yes	No

As verbs, debunk is a hyponym of laugh at; that is, debunk is a word with a more specific, narrower meaning than laugh at:

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

Other hyponyms of laugh at include tease, lampoon, satirise, satirize, expose, stultify.

laugh at (verb)	debunk (verb)
subject to laughter or ridicule	expose while ridiculing; especially of pretentious or false claims and ideas