spiritualist vs psychic

spiritualist and psychic both are nouns.

Word	Noun	Adjective	Verb	Adverb
spiritualist	Yes	Yes	No	No
psychic	Yes	Yes	No	No

As nouns, psychic is a hypernym of spiritualist; that is, psychic is a word with a broader meaning than spiritualist:

spiritualist: someone who serves as an intermediary between the living and the dead
psychic: a person apparently sensitive to things beyond the natural range of perception

spiritualist (noun)	psychic (noun)
someone who serves as an intermediary between the living and the dead	a person apparently sensitive to things beyond the natural range of perception

spiritualist (adjective)	psychic (adjective)
of or relating to or connected with spiritualism	affecting or influenced by the human mind
	outside the sphere of physical science