bomber
Word family
Synonym discussion
Sense: noun/1
For sense 1, bomber is specific: the person uses bombs. Attacker is much broader and can describe any violent act, from hitting someone to using a gun or knife. Terrorist is narrower in one way and broader in another: it often suggests a political or social aim and an attempt to spread fear, but the person may use methods other than bombs. Arsonist is different because the crime involves setting fires, not explosives. In news reports, police may first say attacker if the method is unclear, then bomber after they find explosive materials. If a person burns a building, arsonist is the better word.
Etymology
Bomber was formed in English from bomb and the ending -er, which is often used for a person or thing that does an action. The word bomb came into English through French. Later, bomber was extended from the person sense to a plane that carries bombs, and then to the short jacket linked with bomber crews.