schema

A plan, outline, or model.

A pattern imposed on complex reality or experience to assist in explaining it, mediate perception, or guide response.

A diagram, or graphical representation, of certain relations of a system of things, without any pretense to the correct representation of them in other respects; in the Kantian philosophy, a product of the imagination intermediate between an image and a concept. being intuitive, and so capable of being observed, like the former, and general or quasi-general, like the latter.

Scheme; plan; outline; formerly, a geometrical diagram.

In logic, a figure of syllogism.