predestinarian vs predestinationist

predestinarian and predestinationist both are nouns.

Word	Noun	Adjective	Verb	Adverb
predestinarian	Yes	Yes	No	No
predestinationist	Yes	No	No	No

As nouns, predestinarian and predestinationist are synonyms defined as:

predestinarian and predestinationist: anyone who submits to the belief that they are powerless to change their destiny

Other synonyms of predestinarian include determinist, fatalist.

predestinarian (noun)	predestinationist (noun)
anyone who submits to the belief that they are powerless to change their destiny	anyone who submits to the belief that they are powerless to change their destiny

predestinarian (adjective)	predestinationist (adjective)
of or relating to predestination; holding the doctrine of predestination