An accident is something that happens when you are not expecting it, and that you didn't mean to have happen. The opposite of something happening by accident is happening deliberately, or on purpose.
Ais forAppointment
Bis forBall (event)
A ball is a large, formal social gathering where people would eat a good meal, and then dance socially. They were typically for the upper classes, and people would dress up in their best, most expensive clothes for the ball. Balls used to be a way for people to meet each other.
Cis forCelebration
A ceremony is a ritual or celebration that marks the completion of a major life event such as a wedding or graduation from school.
Dis forDate (event)
When you like someone, you might ask them out on a date to somewhere nice like a restaurant.
