Reading about Kernel processes and executing threads makes very little sense compared to a hardware core with two threads.
For me it's the opposite: a hardware core "having two threads" still sounds a bit strange. It can run two threads at the same time. Maybe Intel should have invented a better name for the thread-runner-thingie.
Yes, if you already know that you can drag and drop between unrelated programs, it will work like you expected it.
If you don't know it, you can pick it up by looking over the shoulder of your friend or co-worker, or you can read articles like this.