Words From The Same Family - Sudden v Suddenly

Sudden (adj) - occurring or done quickly or without warning. 
- Mrs Lee's sudden death took everyone by surprise.

- Timothy was rushed to hospital when he had a       sudden heart attack at the office this morning.  



Suddenly (adverb) - quickly and unexpectedly.
- John suddenly appeared in the doorway, giving me a fright.

- I was woken up suddenly by a loud knock on my door.