2Kings 18:4 He removed the high places, and brake the images, and cut down the groves, and brake in pieces the brasen serpent that Moses had made: for unto those days the children of Israel did burn incense to it: and he called it Nehushtan.
So, therefore, you cannot tell if an object *is* an idol without knowing the faith of an individual - that they put their faith in the object to protect them.
Is that a correct statement of your view?