a tilt in a cylindrical technology has a cylindrical size and a fixed want
cylindrical_surface is convex_thing. hollow_cylindrical_object is not container_shaped_object. cylindrical_surface is not convex_thing. cylindricality is not roundness. shell is not hollow_cylindrical_object. tilt is position. cylindrical_surface is two_dimensional_shape. shell is hollow_cylindrical_object. cylindricality is roundness. cylindrical_surface is not two_dimensional_shape.