Time for Wm Blake again:

"We have no Body distinct from Soul, for that called Body is a portion of Soul discern'd by the five Senses."

If you discard the concept of spirit, then

We have no Soul distinct from Body, for that called soul is a portion of Body undiscern'd by the five Senses.

Which comes to the same thing; that they're aspects of each other.

It's useful to have two words--body, soul or matter, spirit --for purposes of discussion, but it's a verbal convenience. As some great man said, the world is not formed on the plan of the English language.

You can separate a poem into the words & the meaning, or a computer into hardware and software, but it's only a convenience of language.

clint