Decalage
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Decalage on a fixed-wing aircraft is the angle difference between the wing and the horizontal stabilizer.
Two different decalage definitions are commonly used: Aerodynamic decalage is the angle difference between the zero lift lines of the wing's and stab's airfoils. Geometric decalage is the angle difference between the chord lines of the wing and horizontal stab. 
Decalage is often confused with incidence which is the angle between each of the surfaces (wing and horizontal stabilizer) and some other reference, usually the fuselage´s axis or the airflow.
