I’ve read that spiritualism and spiritism started in the 18th or 19th centuries. Folks who take one or both seriously seem to think spiritism isn’t spiritualism. How the ‘isms’ are different depends on who’s talking.
Some say spiritualism is a religion, while spiritism is a social movement. Or spiritism is a science and spiritualism isn’t.1
I’ve seen “spiritualism” used to describe spiritism as practiced by English-speaking folks, particularly Americans. Maybe that’s a common use the word.
Or maybe it’s just how it’s used in much of what I’ve read.
It’s what I mean by “spiritualism” and “spiritualist.” Usually. Often. Sometimes, anyway. I’m guessing there