Difference Between "string" and "String"

what is the difference between both (String and string)? After completing the execution of this program when we mouse over on string is shows class System.String and  when we mouse over on String it also shows Class System.String. Class System.String statement clarifying that string is the alias name of String.

Finally:

String is the alias name of String because both contain the same things 

Difference Between "string" and "String"

what is the difference between both (String and string)? After completing the execution of this program when we mouse over on string is shows class System.String and  when we mouse over on String it also shows Class System.String. Class System.String statement clarifying that string is the alias name of String.

Finally:

String is the alias name of String because both contain the same things