title: what's the difference between inheritance and polymorphism?
body: <p>can you give me a simple example of inheritance and polymorphism, so it could be fully clear and understandable?</p>
  
  <p>using C# would make it more clear, as I already learned it.</p>
  
  <p>P.S: the tutors, books we've got are in native language, (arabic)</p>
  
  <p>sorry if that question seemed so easy, even silly on you guys, but these concepts are considered hard; if you don't fully understand them, then you fail.</p>