Opposite

 1.Boxing :

Boxing is the process of converting a value type to the  object type/reference type

2.UnBoxing :

UnBoxing is the process of converting a object type/reference type  to the value type

3.Stack: LIFO

4.Queue: FIFO

5.Serialization:

Serialization is the process of converting the state of an object into a form (string, byte array, or stream) that can be persisted or transported.

6.Deserialization:

Deserialization is the process of converting the serialized stream of data into the original object state.