spiritualism vs otherworldliness

spiritualism and otherworldliness both are nouns.

Word	Noun	Adjective	Verb	Adverb
spiritualism	Yes	No	No	No
otherworldliness	Yes	No	No	No

As nouns, spiritualism and otherworldliness are synonyms defined as:

Other synonyms of spiritualism include spiritism, spirituality.

spiritualism (noun)	otherworldliness (noun)
concern with things of the spirit	concern with things of the spirit
the belief that the spirits of dead people can communicate with people who are still alive (especially via a medium)
(theology) any doctrine that asserts the separate existence of God