While the specific word is rare, the idea is quite ordinary. Bodhi isn't a very good Jedhan, but he was still born in the city of a thousand faiths, and there are plenty of interpretations of the Force that use concepts like spirits, even if they're not entirely mainstream. Balance, though. His proper religious education may have ended when he was five, but balance is a concept he knows well. He classifies shaman as basically a monk, probably and nods like he understands and tries to think of a delicate way to ask his follow-up question.

"Does that... is that something you can do here?" He's as far as you can get from an expert, but if everybody is supposed to be dead, that must mean something different than it did in the world they came from.