Spiritist is the person that does the communicating between the living and the dead. Spiritualist would be the believer who holds the belief that that can actually happen. So, a Spiritist would be a Spiritualist, but a Spiritualist is not necessarlly a Spiritist. At least that's what I have picked up on the terms. However, I have noted a rather large spectrum of variation in term usage in this area.

The Bopper