Choose the word which is different from the rest:  Raid, Attack, Assault, Defence, Ambush
All except Defence are forms of attack.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Choose the word which is different from the rest:  Raid, Attack, Assault, Defence, Ambush
### Input: 
### Response: All except Defence are forms of attack.