Picture something that has moved in and will not leave, and one person standing there speaking set words at it until it goes. That is the whole picture, and notice what it is not: nothing is destroyed and nothing is fought. The Greek behind the word is ex (out) plus horkos (an oath), so it can be read as binding something by words until it has to leave. Both uses of exorcism sit on that — one where the unwanted thing is a spirit in a house, one where it is a memory in a person.
From the word’s history
From Greek exorkizo, made of ex (out) and horkos (an oath), so the word starts near binding by oath, which is why the spoken words are the centre of the picture.
來自希臘文 ἐξορκίζω，由 ex（出去）和 horkos（誓言）組成，出發點接近「以誓言逼迫」，所以畫面的重心一直是被念出來的那些話。
Wiktionary entry supplied in this packet (source_ref kaikki:3f6f69a190036ae4:925047863:19101): From Old French exorciser, from Late Latin exorcizo, from Ancient Greek exorkizo, from ex + horkos.
登入就可以看每一支怎麼連回核心畫面。