What is the difference between the spiritual and the material?

He never appears to stand between the material and the audience.

When it works, there's a nice tension between the writing and the material.

It's the transition, what happens between the material and the ideas.

It was a movement where the artists created a dialogue between the material, subject, and the world.

It is the threshold between the material and spiritual world.

But the chemistry between the performer and the material just isn't here.

Indeed, some applications require contact between the material and the hot gas.

There may also be a break between the introductory material and the feature.

How do you decide between material which would suit a group or solo project?