Hi,
Muderer is someone merder any people, So He is a murder.
A murderer is someone who commits murder or murders people, so he is called a murderer.
Attacker is someone who attack someone.
An attacker is someone who attacks someone.
Robber is someone who rob something of somebody.
A robber is someone who robs someone or something from someone.
thieft is someone who rob something.
A thieft is someone who steals from someone/people.
Burglar is someone who burglar something of someone when they have been sleeping.
A burglar is someone who commits burglary or burglarize people especially when they are not home or asleep.
Shoplifter is someone steal something from shop.
A shoplifter is someone who steal something from shops or stores.
(Draud?not understand) - not sure what this is