Spoiler or aileron?

The difference between a spoiler and a wing is that the spoiler is an aerodynamic appendix completely resting on a surface, a unique extension completely connected to the bodywork, while a wing is a real wing, detached from the base and connected to it only by means of supports. In the photo of the red Alfa 156 you can see an example of a spoiler, while those on the Fiat Coupè Blu and on the Alfa Spider are ailerons