Design Patterns - Adapter pattern vs Decorator Pattern? [duplicate]

Question

I have been reading about design patterns and this got me curious:

Decorator Pattern says wrap an original object and add additional features in the wrapper object. So structurally speaking - Wrappers follow decorator pattern.

Adapter pattern says changing one object by creating an instance of it and adding functionalities to it. These functionalities do not match those of the original object so we have to modify them, but we may also add our own extra methods which are not a part of the original object.

In this regard, what is the difference between Adapter and Decorator design pattern?

Answer 1

Decorator, attach additional responsibilities to an object dynamically. For example adding sugar in a coffee.

Adapter, adapts interface of an existing class to another interface. For example eletrical adapter.