Where is the difference between Init and initialize OC

User answer:

Init is the "-" methodthat begins with the Initializeclass method that begins with "+" Init in class instantiation (newnew) equivalent to [[class   New] is sending a message, and invoking a class method [ClassName] also sends a message to this class. At new, the Initialize method will call the new once before Init, Init will be called once, how many times is new, and how many times init will be called, but initialize will only be called once. If the subclass does not implement initialize overrides, when the subclass receives the message, it calls two times initialize, one for the parent class, and one for the child class. 

Where is the difference between Init and initialize OC