It can't. Linux is essentially what makes you able to run your computer. It is the kernel of your operating system, shutting it down would be done by shutting your computer down(init 0). Many window...
Linux was Linus Torvald's college project. He started this because at that time there was no free open source kernel available, only open source kernel was mimix, which was not free.
This is similar to asking, "What is the difference between a quadrilateral and a rectangle?" open SUSE is just a distribution of Linux as there are many different distributions of operating systems...