What_it_is: You need to define what you mean by soul and mind.
Soul may mean a number of things (
definition) as may mind (
Mind's definition). Unless and until the asker clarifies which definition they're speaking to, any answer as to
what the difference is will only lead to confusion and missed meaning.
For my part, I take "soul" and "mind" to be virtually synonymous; except that "soul" carries an intonation of being a separate (or separable)
entity whereas "mind" is more the phenomena comprising thought, intelligence, memory, decision-making and sense of being. To this second concept, my belief is that it resides in the brain - not as a single physical part or organ - but as the dynamic that's created when elements of the brain interact biochemically/bio-electrically to create the resulting effects shown by its definition. You can't hold it, you can't point to it because its an invisible collection of interactions (some of which can be detected using brain scans, etc.). Even if you held a brain in your hand, you're holding a lot more than ONLY what the mind is comprised of (in terms of components), but likely a non-functional one at that.
Much in the same way, Gravity is an effect of mass; you can't see it, smell or touch it (only its effects). Or perhaps a television; you need not only the components present and functional, but energized and working together to produce the image. In any case: until its more fully interpreted through external means, people will continue to mysticize it.
Thanks