A triennial event happens every three years.
Events Like ChurchThat would depend on where you live and what you class as an event. To me an event is a special occasion like a dance, exhibition etc, not going to church,,so.........think of what it means to you,
Whatever happens in a story, any event in that plot would be a plot event
B Event is nearly always a consequence of Event A. If you kick a ball (Event A), one consequence is that it either rolls or flies through the air (Event B). Event A could lead to Event C: the ball could strike someone. Every event, whether purposeful or accidental, has a consequence.
Once a year. An annual event only happens once a year, and happens every year.
I think there is no antonym. An anniversary is an event or occasion we remember but if nothing happens, then nothing happens, life goes on.
You would have no one nearby to help you in the event of an emergency situation, which would place your well being at risk.
You would have a headache.
The world would be havoc and murderers rapists will be every where.
I would write fifty six thousand eight hundred as follows 56,800 using a comma every third digit helps with the readability of a number
What cost $50 in 1920 would cost $566.64 in 2012.Or, in the event you are asking the reverse: What cost $50 in 2012 would cost $4.41 in 1920.
Fifty-one.