Execution threads vs normal threads

Do execution threads differ from normal threads we create in our Programs.

I am reading that execution threads are related to the CPU you have.
Say for a Dual Core Xeon Processor, you can have 2 Exeecution threads.

However, when we create threads in our software those are limited by a configuration parameter in the system file and are much larger in number per Process (1000 or more)

How are the 2 types of threads related?

Well, think of the regular threads as like processes or programs. Now on a regular, single core machine, you have only one thread of execution and many processes. We handle this by switching back and forth between these programs really fast. It's the same thing in a multithreaded environment. The only difference is that since we have two threads of execution, we can run two at a time instead of one at a time.

when I show /proc/cpuinfo and it shows 4 CPUs, does that mean I have 4 threads of execution I can use to run my programs(and the threads within them)