title: The subsystem and the components of the system in software engineering
body: <p>How can i easily distinguish between the subsystem and the components of the system in software engineering ?</p>
  
  <p>Give a detailed definition for each of them..</p>
  
  <p>And to make it more clear to me, lets consider the system is a StackOverflow site, what are its components and the subsystems?</p>