An anniversary is usually something that people celebrate when someone or a couple do something important and that date comes around the next year. Like me and my girlfriend started dating on June 29 2010 our 1 year anniversary was June 29 2011. And so on and so fourth.
anniversary
You get your birthstone.
Centenary
A centenary.
aniversary
Anatomy of a Scene - 2001 The Aniversary Party was released on: USA: 2001
aniversary..(this is a fast money question from facebook) another one is birthdays..but aniversary gives you more points!
aniversary
Truth or Square!
It may simply be called 'death aniversary'
In 2008 Munich got its 850 years aniversary
Halo 4 came out november 6th 2012