witch vs occultist

witch and occultist both are nouns.

Word	Noun	Adjective	Verb	Adverb
witch	Yes	No	Yes	No
occultist	Yes	No	No	No

As nouns, occultist is a hypernym of witch; that is, occultist is a word with a broader meaning than witch:

Other hypernyms of witch include adult female, woman.

witch (noun)	occultist (noun)
a female sorcerer or magician	a believer in occultism; someone versed in the occult arts
a being (usually female) imagined to have special powers derived from the devil
an ugly evil-looking old woman
a believer in Wicca

witch (verb)	occultist (verb)
cast a spell over someone or something; put a hex on someone or something