테러가 · 테러를
terrorism, terror attack
Example
공항에서 테러가 일어나 많은 사람이 다쳤습니다.
A terror attack happened at the airport, and many people were injured.
Word parts
From English 'terror'.
Good to know
Konglish twist: 테러 means 'terrorism/attack'; for the feeling of terror, use 공포.