Huh; that's interesting. I thought the word "step" automatically signaled that any child wasn't a product of your marriage, wouldn't it? I guess it would depend on how close to the kids you feel to make different designations whether they are in front of you or you're talking about them.

I'm pretty sure I refer to everyone by the same term, whatever it is; for example, my son-in-law is just that. I never refer to him as my daugher's husband. My nieces are my nieces, not my brother's daughters, if that makes sense.