The mind and the body

We think with our minds and move with our body. That was pretty easy to grasp right? One cannot obviously switch these two roles, i.e., move with their mind and think with their bodies.

But then, what is the mind we speak of? Wikipedia defines mind as:

The mind is the set of cognitive faculties including consciousness, imagination, perception, thinking, judgement, language and memory, which is housed in the brain (sometimes including the central nervous system). It is usually defined as the faculty of an entity's thoughts and consciousness. It holds the power of imagination, recognition, and appreciation, and is responsible for processing feelings and emotions, resulting in attitudes and actions.

Hence one can obviously conclude that mind isn't any physical entity with mass right? Or is it?
René Descartes was a brilliant French mathematician and philosopher. He gave us the Cartesian system of coordinates we use today. Descartes made an observation, or an epiphany to be precise, that the mind and the body are two separate entities. He stated that he can doubt the existence of his body(say he were in a dream where he grew an extra arm, he would easily realise that this is a dream or a delusion and hence could differentiate it from reality), but he could never doubt the existence of his mind, because he knows it is there, his consciousness, his emotions, and everything which falls under the umbrella of the mind. Hence the popular statement:

I think therefore I am.

Because one can think, they are aware of their existence. But is everyone/everything aware of their existence? I mean is a basketball aware that it is a basketball? Is a dead person aware of their death?

René defined things in two ways, res cogitans, i.e., a thing that thinks(the mind) and res extensa, a thing that exists physically, which is our body and other substances that exist around us. He stated that the body is a mechanical thing which has a soul in it, which controls it sometimes. Thus, Descartes concluded that the body consists of two different things.

There was a Italian scientist in the 1800s by the name of Luigi Galvani. He performed en experiment(something we all are aware of these days). He took dismembered frog legs, now before we move further, we can all agree that those legs don't have any "soul" in them, a thinktank like we do. This means they cannot perform tasks like an alive person would right? Turns out that when Galvani applied electricity to these legs, they became "tensed" and stopping the supply made them relaxed, repeatedly doing this made the legs appear as if they were "dancing". Now, one question we raise is that how does the leg suddenly appear to have a "soul" in it, something causing movements in it? Has it gained conscious?

There was a boom in such thoughts and experiments in that whole era. The popular figure we know of, "The Frankenstein", was the brainchild of all such thoughts. It/He was a dead human with electricity injected into them to make them human. It was drawn from Galvani's experiments.

What do you think? Is there a separation between the mind and the body? What exactly is the mind we talk of?

Thanks for reading! :)