reincarnationism vs ism

reincarnationism and ism both are nouns.

Word	Noun	Adjective	Verb	Adverb
reincarnationism	Yes	No	No	No
ism	Yes	No	No	No

As nouns, ism is a hypernym of reincarnationism; that is, ism is a word with a broader meaning than reincarnationism:

reincarnationism: a doctrine that on the death of the body the soul migrates to or is born again in another body
ism: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of reincarnationism include doctrine, philosophical system, philosophy, school of thought.

reincarnationism (noun)	ism (noun)
a doctrine that on the death of the body the soul migrates to or is born again in another body	a belief (or system of beliefs) accepted as authoritative by some group or school