Interface and Absract

[Lucy]

Please tell me what's the different between an interface and absract? If possible kindly explain it with the help of an example

Thanks
Lucy

[caradoc]

An abstract class can have instance methods that implement a default behavior. An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract.
An interface has all public members and no implementation. An abstract class is a class which may have the usual flavors of class members (private, protected, etc.), but has some abstract methods.