As nouns the difference between demotist and demonist
is that demotist is (historical) one versed in the ancient egyptian demotic writing while demonist is a believer in, or worshipper of, demons.
demotist
English
Noun
(
en noun)
(historical) One versed in the ancient Egyptian demotic writing.
* :
- "Egyptologists, linguists, and papyrologists specializing in the study of the Demotic script ... are known as Demotists."