accident, action, action, advent, adventure, romance, appearance, business, disaster, event, disaster, celebration, ceremony, chance, circumstance, coincidence, conjuncture, crisis, act, development, emergency, episode, experience, use, fact, function, holiday, incident, connection, miracle, matter, milestone, miracle, unhappiness, failure, error, occasion, appearance, passing, phase, phenomenon, predicament, continuation, shift, situation, history, thing *, tide, transaction, triumph, turn, surprise
Of course, one of them would be enough ... if not, you can add or wrap the word event to make it not a keyword. Something like @event or [event], though, I have to say that I personally do not like this practice, although it is syntactically valid.