practical joker vs hoaxer

practical joker and hoaxer both are nouns.

Word	Noun	Adjective	Verb	Adverb
practical joker	Yes	No	No	No
hoaxer	Yes	No	No	No

As nouns, practical joker and hoaxer are synonyms defined as:

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

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