An assault is an attack. Getting punched, yelled at, or bombed are all types of assault.
To assault is to attack or bombard someone in some way. Fighter planes can make an aerial assault, while ground troops make a ground assault. Verbal assault consists of insults, swearing, or threats. A strong criticism, like a negative review in the newspaper, is a written assault. Physical assault can range from getting pushed to getting shot. You could even say "That music is so loud it's assaulting my ear drums!"