Might be preaching to the choir here, but if anyone needs to hear this, it's perfectly acceptable for you to use multiple kinds of language in reference to your system.
I don't just mean using multiple labels, though that's also okay and a thing. I mean it's okay to call yourselves both "alters" and "headmates." It's okay to use some medical terms alongside non-medical terms. It's okay to consider each other separate people and still prefer to refer to yourselves as "facets" or "parts."
If everyone in your system is okay with it, I don't see any reason to not use the language that fits you best.





















