title: C# : Is Variance (Covariance / Contravariance) another word for Polymorphism?
body: <p>I am trying to figure out the exact meaning of the words <code>Covariance</code> and <code>Contravariance</code> from several articles online and questions on StackOverflow, and from what I can understand, it's only <strong>another word for polymorphism</strong>.</p>
  
  <p>Am I correct with the above statement?  Or have I got it wrong ?</p>