magician vs exorcist

magician and exorcist both are nouns.

Word	Noun	Adjective	Verb	Adverb
magician	Yes	No	No	No
exorcist	Yes	No	No	No

As nouns, exorcist is a hyponym of magician; that is, exorcist is a word with a more specific, narrower meaning than magician:

Other hyponyms of magician include enchanter, exorciser, magus, sorceress, witch doctor.

magician (noun)	exorcist (noun)
one who practices magic or sorcery	someone who practices exorcism
someone who performs magic tricks to amuse an audience	one of the minor orders in the unreformed Western Church but now suppressed in the Roman Catholic Church