noun
summoning spirits; spirit evocation
Refers to the act of calling down or invoking spirits, often in a ritual or séance context. The kanji 降 suggests 'descending'.
降霊術で霊を呼び出す。
Summon a spirit through spirit evocation.
彼女は降霊会に参加した。
She attended a séance.
noun
communing with spirits; spiritualism
Focuses on communication or interaction with spirits, rather than the act of summoning. The kanji 交 implies 'exchange' or 'interaction'.
交霊によって死者と話す。
Communicate with the dead through spiritualism.
交霊術は霊との対話を目的とする。
Spiritualism aims at dialogue with spirits.
Compound of 降 (descend) or 交 (exchange) and 霊 (spirit). The two spellings reflect different nuances of interacting with spirits.