prankster vs hoaxer

prankster and hoaxer both are nouns.

Word	Noun	Adjective	Verb	Adverb
prankster	Yes	No	No	No
hoaxer	Yes	No	No	No

As nouns, prankster and hoaxer are synonyms defined as:

Other synonyms of prankster include cut-up, practical joker, tricker, trickster.

prankster (noun)	hoaxer (noun)
someone who plays practical jokes on others	someone who plays practical jokes on others