What are the differences between Abstract and interface?

Ans: 

 1) Abstract cannot be instantiated but we can inherit. Interface it cannot be inherit it can be instantiate

2) Interface contain only declarations no definitions. Abstract contain declarations and definitions.

3) The class which contains only abstract methods is interface class. A class which contains abstract method is called abstract class

4) Public is default access specifier for interface we don’t have a chance to declare other specifiers. In abstract we have chance to declare with any access specifier