Apart from the differences based on the target audience, budget, team realization, etc. there is a difference that I want to speak to you now.
Although we will see the exceptions, the fundamental difference between an animation, as understood by the general public and an animated visualization of an architectural project, lies in the movement of the elements that appear on the scene.
The architectural animation is based on the representation of spaces where, in principle, animated objects do not appear.
About animated films that we see in the cinema, the main characters move, they are animated.
Animation movies need to create the settings where your characters will move. In this case, the protagonists are them.
The case of architectural visualization is different: the protagonist is the scene.
In both cases, it is necessary to prepare the lights and the camera movements but all the animation work of characters in our case and fortunately for us, disappears.