Boolean - which one is the same as AutoCAD Subtract?

[davidcockey]

@user2212

Bottomline: I need to Subtract an inner object from an outer object that never touch each other, leaving an enclosed cavity.

What would you do with the result if you could create it? Someone can probably help you with how to get the final result you need using Rhino, but it may be a different set of steps than what is done in other software.