I dunno what either of those really are. Spirits sound like ghosts, but that probably isn't right, and the closest thing I know of to 'sylph' is using Sylphestia.

[ Huh. Second mention of angels. ]

You're not the first to mention that, but uh. We don't have mentions of other races close to ours. Well, I mean, humans are kinda close, at least in shape to a lot of us. [ Oh, he forgot to mention the thing about dead humans becoming seraphim once in a while. He'll just add it later or something. ]