Variable type name in causal inference Causal inference language distinguishes different variable types: confounders, mediators, colliders, moderators.
Some time ago I encountered quite rare variable name which I can not remember. The idea of it was that only a part of the confounding variable caused outcome and variable of interest, while the other part was irrelevant. This variable, as far as I remember, had an information (caused) of this irrelevant part.
I could mess something here due to lack of memory, but I would gladly appreciate the name which could lead me to some literature describing this situation.

You are probably thinking of a component cause, part of the sufficient component causal model. It is described briefly here.
