reincarnationism vs philosophy

reincarnationism and philosophy both are nouns.

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

As nouns, philosophy is a hypernym of reincarnationism; that is, philosophy 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
philosophy: a belief (or system of beliefs) accepted as authoritative by some group or school

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

reincarnationism (noun)	philosophy (noun)
a doctrine that on the death of the body the soul migrates to or is born again in another body	the rational investigation of questions about existence and knowledge and ethics
	a belief (or system of beliefs) accepted as authoritative by some group or school
	any personal belief about how to live or how to deal with a situation